Marriage is a Contract

"Wow, you certainly weren't lying about being great in bed, babe!" I exclaimed as I continued pumping in and out of Deanna's very slick and warm twat.

"Yeah, well, Darley wasn't lying, either. I can see why she refused the payment. She must have been watching Game of Thrones, where those girls refused payment for doing Podrick Payne. It's the same thing here. You're a lot better than Robbie, in fact," Deanna panted as I went deeper inside her again.

"Are you sure, because I'm huffing and puffing to keep up with you," I warned her, feeling very breathless right then.

"Then, use your fucking inhaler, please, and stop being too proud to acknowledge your asthma, okay? I'd like to marry you and I can't if I kill you first!" Deanna called me on the factor that I forgot to consider...my wheezing was likely due to my asthma.

A few puffs later, I was back behind Deanna, inside her luscious pussy, and humping her furiously. Far from asking me to go slower, my fiancee begged for more...and more. She couldn't seem to get enough of my dick. I certainly couldn't get enough of her delightful pussy and smooth, pale ass. God, that woman had a butt that was amazing! Her booty was more than worth fucking in and of itself. When I acted on impulse and pulled her soft, long brown hair a bit, she turned into even more of a wild woman, if that were possible. She began fucking me back with a desperate ardor that left no question of her feelings for me...it was lust...pure and simple, animal lust.

When Deanna started squealing like a pig and her toes curled, her chest heaving and her breathing shallow, there was little doubt. It was too unglamorous and unflattering a noise to be fake. She was cumming for me, yet again, which was the other reason that I knew it was real. I just knew that more of this, sliding in and out of her warm, wet snatch, my previous loads helping lube her further, and I would soon expel a third load and would be unable to stop myself.

"Do it, please! Cum inside me! Fill me with your cum!" Deanna turned her head just enough to make her plea for my seed even stronger.

I couldn't resist that sexy brunette, of course, shooting my jizz deep into her, unaware that we just made our twins, Amber and Jeanette (evidently, Deanna's maternal ancestors threw twins a lot). We wouldn't find that out for a good while, in fact. It was our good (or bad, depending on your perspective) luck that we made our kids that first night together, the culmination of a secret and mutual attraction dating back to high school. It wasn't love, but it was a very potent lust for both of us, plenty of erotic passion to it.

Of course, since Deanna had been intimate that morning with Robbie, her last fuck with him for the next six weeks, there was some doubt as to paternity, but I never let that gnaw at me. For one thing, Deanna was honest about it when she informed me of her pregnant state, that since they were fraternal twins, there was some chance that I was raising Robbie's brats, or at least one of them, anyway. For another, Robbie insisted on a paternity test himself, hoping that it would break us up.

All that accomplished was turning up the fact that he was sterile (due to the mumps) and that I was truly Daddy to both girls in every sense of the word. To be perfectly honest, I no longer cared about the paternity issue...I was already determined to be "Daddy" to them, whatever it took (including talking Robbie into signing away his parental rights and letting me adopt them if I could swing that). They were my kids already, as far as I was concerned. I had already claimed them as mine mentally and emotionally.

Chapter 2

By that point, Robbie really was jealous, just as Deanna predicted, as he had to watch from the sidelines while I walked with Deanna everywhere, hand in hand like any couple. No one would have guessed that we were anything but a very romantic, loving pair. Our wedding was a very big deal, and yes, Robbie got an invite as planned. He even attended, strangely enough, though he had to be escorted off the premises when he produced a pair of brass knuckles and went after me at the reception. He was arrested for drunk and disorderly conduct, though I was kind enough not to press charges for assault. (Deanna was already mad at him, best not to suddenly turn her anger on me when I was trying to enjoy my wedding night and honeymoon, it might cast a pall on things.)

Deanna made a very beautiful bride, too, even more so with the growing baby bump by then. Her father wasn't too happy that I had obviously fucked his elder daughter out of wedlock, but so had Robbie, who lived with her outside of marriage, and at least I had tied the knot with her. Robbie nearly spoke up when Reverend Aidan Jessup asked for objections, but he was quickly hushed by Erin, who wasn't about to let anyone ruin her twin sister's day. No, the entire Maxwell clan, though not overly thrilled with a "backslidden Christian," as they called me, still circled the wagons to back their pride and joy up. They went out of their way to ensure that she had a very happy wedding to me, never guessing that she still loved Robbie's sorry ass.

They also didn't know that she and I had an open marriage and one of convenience to boot. In fact, more than a few of Deanna's relatives commented on how happy she was with me, as opposed to when she was with Robbie, much to my shock and hers. Perhaps they just assumed that it was love, because modern, Western culture has trouble with the idea of a mercenary marriage and often considers it bizarre or perverse. Never mind that the majority of their ancestors did it all the time. Never mind that much of humanity does it even now and doesn't appear to suffer too much from it.

"Come here, son. Now, listen, I think that you still need to get right with God, but I am very pleased with the fact that you did the right thing by my daughter. Yes, you sinned, as did she, and as did Robbie, but you've got one foot back on the right path by entering the proper, Biblical estate of holy matrimony, truly becoming one flesh with Deanna, the mother of your children. I believe, honestly, that she will do right by you, too.

"I'm also pleased that neither of you went for an abortion. That would only compound the sin of fornication with that of murder, shedding innocent blood. As a result of one wrong choice and several right ones, I have my grandchild or grandchildren on the way, and for that I am very grateful to you two and God as well. Her mother and I are very happy, all things considered. You always struck me as a good friend and I often wondered why she wasted her time with Robbie when she could have a better sort of man.

"Despite your sins, you're essentially that better man. You could be even better, but that's between you and God. Truth be told, I never much liked Robbie, anyway. Welcome to the family, son," Clark Maxwell shook my hand and even clapped me on the back a little like his own son.

"Sam, thank you, seriously. You gave me real hope for both of my daughters. If Deanna could break loose from that Robbie jerk, then perhaps there's a chance for Erin even now. She doesn't seem to have much in the way of a love life, but I can only hope that she finds someone more like you, less like Robbie. He wasted so much of her time, keeping her on the edge, hoping for a proposal, a ring, all that jazz. Not a sign, ever. You knocked her up, but instead of fleeing as I feared when I heard of that, you took a leap of faith and chose to ask her to marry you.

"I know that some of this was urgency on your part, but when things became tough and you faced either growing up and taking responsibility for the woman that you loved and your child, versus tucking tail and running, you stepped up to the plate and hit a grand slam. Yes, the initial conception was a sin, as was shacking up, but so was what Robbie did with Deanna. The difference lies in how you approached your obligations. Instead of trying to evade your role, you took it on...I'm proud to be your mother-in-law and call you family," Beatrice Maxwell hugged me close, even crying a little.

"Hey," Erin was next to speak to me, "Can we...talk in private a little?"

"Sure...sis," I smiled at Erin, making her blush a little, as we pulled aside into a small supply room.

"I like that. Sis. I like being family with you, though part of me is jealous. Seriously. I...I guess that I waited too long. It...it's too late, but for what it's worth, I...," Erin fought back tears as she stammered and struggled with the truth.

"I know, Erin. I know how you feel about me. Deanna told me," I told her, kissing her softly on the lips, much to her shock.

"But...you...you married her! You love her, not me," Erin tried to make sense of this.

"No, I love her AND you. There's a difference, sis. I like both of you very much. We can all win here. We can all have what we want," I assured her, not mentioning yet that I wasn't sure if Deanna and I would last...that was a problem for another day, and with two babies on the way, I was in no rush to divorce her anytime soon.

"Meaning? You'll cheat on Deanna? You barely married her today! What the hell is this? I love you, but you're not making any sense, you're scaring me, and you're breaking my heart," Erin was visibly dismayed, as the door opened up.

"This...is our deal, sis," Deanna said to her, "Sam and I have an open marriage. It's totally cool, Erin. I really am fine with this. We're sisters, twins. We should share a man, if you ask me. Particularly this man. I won't share Robbie with you, though. Not because I wish you to deprive you, but because he's like an addiction that I have and Sam is smart enough to accept it. He's just not something that I would want to put you through, given his rather selfish ways. I still love Robbie and we're still together, at least for now, though I have my doubts after this incident."

"Wait...you're cheating on Sam with Robbie? This is...just weird," Erin tried to make heads or tails of the whole deal.

"It's not cheating. I know about it. She knows about me and other women. Though to be fair, I didn't take up with Darley Marcus until she resumed relations with Robbie. And that's not counting Annette Krauss. Yes, they're both my lovers, as you can be. Hell, Deanna's sleeping with Annette, too. It's a relatively recent thing, as it happens. Only been going on since Deanna and Robbie resumed their sexual congress, too. Past few months and all.

"Before that, well, she and I took a break from other people and focused on each other to help make a baby together. Technically, I didn't have to, per our agreement, but I wanted to devote as much sperm to making babies as I could. Turns out that I didn't need to, as we seemed to have nailed it on the first day. The only reason that we know it's mine and not Robbie's is that we tested the DNA as soon as we could do an amnio. We also learned that he's sterile, due to mumps when he was a kid," I explained to Erin, who blushed more than a little.

"Um...well, anyway, I'm no plaster saint. I brought you in here more than just to confess. It was my clumsy way to try to seduce you if I could. I'd rather have an affair, even a secret one that you were ashamed and couldn't admit to anyone, than not have you at all. It's like that Barbara Mandrell song. You know, 'If Loving You Is Wrong, I Don't Want To Be Right.' Nice, wholesome country song, right? Lol. It is a funny song to be sung by a Christian woman, though.

"Anyway, I wanted to catch you before the wedding night and honeymoon, get at least one turn with you, and if I'm perfectly honest here...have your baby. I'm...fertile, you see. Very, very fertile. If you don't mind, seriously don't mind, is it...you know, okay?" Erin dared to ask us for our permission to use me for sex, to knock her up at least this once.

"Baby girl, you have no idea just how okay this is with us, alright? There is, however, one condition, one that Deanna insisted upon, being the protective older sister that she is, of course. She can tell you better than I can," I turned to my bride to explain to my sweet sister-in-law.

"Um...let's just say that once this happens, we shut the door on monogamy for good, and that's fine with me. You see, I got Sam to agree that if you and he ever started a love affair, and yes, that's how I see it...a love affair, just as what I have with Robbie...anyway, if you two do, he's not allowed to dump you. He agreed to this quite readily, I might add. Clearly, he's very fond of you as well as me. It's just how he is. I tell ya, I'm really doubting Robbie at times, though he still has this pull on me," Deanna clarified, making Erin's eyes bug out in shock.

"So...we do this...and I have a boyfriend who'll never leave me, even if you leave Sam?" Erin wanted to make sure she heard this right...this was a big deal for her.

"You got it, sister. Though right now, I really doubt that I'll be ready to divorce Sam anytime soon. Staying with him is looking very good, especially since hurting him might make things rough on you, and, quite frankly, he's looking better and better in general, as men go," Deanna added as she answered her sister.

"Yes, you got the catch of the county, if you ask me," Erin smiled at me, the lust and admiration blatant in her eyes.

"No, sis...WE have the catch of the county, but you're right that he is that. Come on, guys. Let's get out of here and take this somewhere more private, where my dear husband can ravage both of us, preferably while my boyfriend cools his jets in the slammer. I might continue the affair after some time, but not for a while. Not after he tried to ruin my wedding day...and my husband's, I might add," Deanna encouraged us as we nodded yes to that.

If fucking Deanna was intense, fucking Erin was just as great in its own way, and our wedding night, after we snuck away and got more privacy...was wild. It was something else entirely. I was balls deep inside Erin before I knew it and she didn't hesitate to show her fondness for me that way. Her hips moved like crazy, letting me go deeper and longer inside her. I repeatedly bottomed out inside my very fertile sister-in-law, while my dear bride watched and jilled off more than a little at the sight of her own sister taking it rough from behind.

I think the combination of the sheer forbidden nature of this act, plus the idea of Erin having my babies, it was just too much, and Deanna came, too, right in our hearing. Erin's own climax was pretty sweet, toes curled and skin very pink as she breathed heavily and drew very taut beneath me. I wasn't quite sure if she was a virgin, but even if she wasn't, this was fairly new to her and she seemed to welcome the dramatic end to her dry spell. She was also intensely grateful to Deanna and me for ending it for her. Her tight pussy gripped me very well, but was thankfully not dry, its juices coating my cock very well indeed, making it fit just like a glove as she moved her hips to take as much of me as she could.

That was far from the end of the wedding night, of course. I had a marriage to consummate, after all, and my own sweet, sexy pregnant wife to fuck as well as I could. It was truly awesome, though, of course, there was no lesbian incest going on...there didn't have to be in this case. I was just pleased to fuck, to couple with, hey, I almost said "make love," with two lovely ladies that I adored and loved very much. Hey, just because I wasn't "in love" with them didn't mean that I failed to love them. I believed that was how things were for all of us, of course. It was a very splendid marriage of convenience.

I must have lost a hell of a lot of fluids that Saturday night, taking the sisters to bed and ravaging them. Soon, of course, I was the rag doll, as both ladies straddled me and milked me for every last drop of my juice in my balls. They sucked me repeatedly, with Deanna giving Erin sweet pointers on how to make it better, too, rode me hard, and things culminated with Deanna giving me her ass at last, just as she promised that she would once we were man and wife. Erin was a little scared to do that and I was very tired by then, so we waited until the morning for that particular act.

I woke up the next morning to two very naked women, both of them doing their best to drain my balls so that I could lose the morning wood and then take a piss at last. Deanna was busy sucking my balls themselves, but it was Erin who did the main act, that of riding my cock with her ass, gripping it tight inside her. I tried to warn her that I would have to pee soon, but she didn't catch on until I came inside her wonderful, tight bowels, and then let out the stream of my hot piss inside her as well. It actually felt great now that I was no longer desperate to pee. In fact, it felt even better than it did when I actually spilled my load in Erin's slippery, velvety backdoor.

"Oh, um...sorry about that. It felt amazing, but I didn't mean to...you know, piss in your ass, Erin," I stammered an apology and tried to withdraw from Erin's booty, but she wasn't having it.

Erin tightened up considerably, and I could feel my dick hardening all over again from the sensual contact with her tight, hot bottom. She wasn't getting off my cock, seemingly preferring to impale herself on me by means of my prick. She slid eagerly up and down my prick, using even my pee as added lubrication, as she rode me vigorously for the hell of it, much to her sister's delight. I groaned and grunted, but I hardly complained, as my sister-in-law pleasured herself, using my cock as a sort of anal dildo. It worked, too, as she came loudly on my pole, and then handed me over to the tender mercies of my wife.

"Oh, shit, this is what it feels like with his piss inside your ass? Damn! Very hot! I'm gonna have to ride his morning wood with my butt a lot in the future! Very wild!" Deanna said as she took me deep inside her booty, letting me go long inside her and service her with my cock.

"Um, is this safe for the baby?" I had to ask her, but I don't think that she heard my feeble protest over the din of her orgasm...I just had to hope that we got lucky.

It wasn't until I finally exploded in my wife's delightful ass that I was released from my morning copulation duties, and only then so that they could bathe me. Yes, they both bathed me, as a team, and then they bathed each other with my eager help. We enjoyed the sensual caress of each other's hands on our skin, theirs much softer than mine. We kissed, made out, and everything, and there was even some teasing that they might ease up on the "no incest" rule, though I doubted that it was anything but playful and lighthearted showmanship. Everything was terrific, until I thought again of the risk to the babies' health from my pissing in Deanna's booty.

"Honey, what's wrong?" Deanna noticed the worried look on my face.

"It's just...well, everything was great, but I'm concerned that it...might jeopardize the pregnancy and all that. The pissing part, that is," I explained, making Deanna visibly relax, as it did with Erin.

"Honey, I am a former med student, and I can assure you that there is no risk at all, unless you have an STD, okay? Urine is sterile, so there are no biohazards or anything else that might harm the child," Erin reassured me with a kiss.

"It's sweet of you to worry, though. That shows actual concern for our welfare. It really does. Ours and the baby's. Or babies', since I think that it's twins. I'll just bet that Erin's going to have twins, too. Twins seem to run in the family on Mom's side. All of the Donovan girls, that is," Deanna kissed me as well.

"Former med student? You dropped out?" I worried about something else now.

"Ran out of funding, sad to say. Not that I mind too much. I have the right attitude for medicine, but I seem to be a little squeamish about some things, which led to me flunking anatomy, and thus my scholarships dried up. It's okay, though. I have a new career in mind, that of mommy. I get to move in with you two, right?" Erin pleaded with her eyes and gave us a very good pout.