"All right, uh, it's --" he stammered a bit and fell silent.
"Scott, listen, you know how much I'm loving this, and Christy, and Debbie -- I just need to make sure you're really good with this. Say the word and I'll decide I'm not feeling well. You've got an out if you aren't totally sure. This is a BIG step."
"Dude, it is, and I'm sure. Get your ass in there." All uncertainty was gone. I got out of the car and opened the door for my wife. As we walked up to the house my sister opened the door, completely naked. I was a few steps from the door when she jumped me, wrapping her arms around me.
"You're here to breed me, aren't you?"
"He sure as fuck is!" my wife answered. She pulled Debbie's face to her for a kiss. "My husband, your brother, is here to impregnate you."
Debbie pushed us both into the house. She turned and waved, and I heard Scott drive off. She came in, closed the door behind her, and began pulling at my clothes. Christy helped her. Soon there was a pile of clothes by the front door. My wife's clothes were sprinkled on top of mine.
"Thanks for letting me be here baby" Christy said, pulling Debbie in for a kiss.
"My pleasure -- you're both my lovers. He's my brother and your husband, one and the same. I hope you're not just going to sit back and watch!" Debbie ran her fingers down my wife's stomach to her pussy. She kissed her as her fingers entered my wife. Christy moaned and rocked her pelvis forward. She was enjoying the feel of Debbie's fingers in her body. My sister took her wet fingers and offered them to me. As I sucked them, my wife returned the favor, fingering my sister. Soon I had another pair of fingers to taste.
"Come up to the bedroom. That's where I want it. I want you to breed me in the bed I sleep in every night." Debbie led us up to her room -- their room. It was a bright day, but it was pretty dark in the room. The heavy curtains kept the room in twilight. There were three candles on the nightstand by the bed.
"We have all day and all night. You're going to put your sperm in me at least three times. Breed me my brother. Get your sister pregnant."
She dropped to her knees. I was ready to go, but she said we had time, so apparently she wanted to make it a big, special production. That was more than fine with me.
Her mouth opened, and I watched as my dick disappeared into my sister's mouth. She sucked slowly, relishing the feel of my body entering her mouth. My wife stood next to me and kissed me. "Do you like how she sucks you stud? She's getting you ready to cum in her fertile pussy. Make her earn it."
I kissed my wife while stroking Debbie's hair. Her mouth felt fantastic. She was moving slowly, but the suction was intense. I was already unusually hard. Christy got on her knees beside my sister. She kissed Debbie's neck and fondled her breasts. My sister kept on sucking, adoring my cock with her hungry mouth. The only sounds were the wet slurps from Debbie. After some time I held her head in my hands and began moving. I made love to her mouth, to her face. Her cheeks hollowed every time I pulled back to prepare for another insertion. My wife held my sister and watched, running her hands over Debbie's body.
Debbie pushed back against my hands. "Your turn baby. I get his cum, but he's your lover too." Christy kissed Debbie lightly on the lips and then took me into her mouth. She sucked a bit harder than Debbie had, faster but with less suction. Debbie moved around behind my wife and cupped her breasts. Then she stood and took my face in her hands.
"I've been hoping for this. I love you brother of mine."
"I love you sis." I felt my wife suck harder.
"Please mount me now." Debbie got on the bed, laying back on her elbows. A shaft of light from a little gap in the curtains fell just above her mound. Christy got up and guided me to the bed, like a nurse leading a patent. I climbed above my sister. I leaned over to kiss her. My cockhead brushed the inside of her thigh. We all held our breath. My lips met hers. My tongue split her lips. My knob split her lips. I was inside my fertile sister.
I felt my wife's hands on my shoulders. She massaged me. I felt her breasts against my back. She pushed me. My penis slid deeper into my sister. I felt Christy move away. I was gripped by my sister's wet, open vagina. We were mating, coupling. This was more than physical pleasure. I was giving her my gift. She was giving me her gift. I was deep inside my sister.
Christy caught my attention coming back into the room. She had her phone, and took pictures of me between my sister's legs. She had a look on her face of arousal. It bordered on awe. I looked at her and mouthed "I love you" as I moved my cock inside my sister.
"I love you too" she mouthed. Then she quietly said "get her pregnant. Breed your sister baby."
I looked down at Debbie. "Do you want me to breed you?"
"Yes brother. I want to have your baby."
I drove myself deep inside her. Slowly. "'I'm going to impregnate you Debbie. I'm going to give you a baby."
She took a deep breath and rolled her hips. I was even deeper inside her. Her body gripped me in a slippery embrace as I moved in and out. I think she thought I was about to blow right then, but I wasn't close yet. I kept thrusting. She realized I had plenty of stamina.
"Christy, please, suck him. Suck your husband for me."
Christy put down the phone and came over. I paused with most of my cock outside Debbie's pussy. Just the tip was held between her lips. My wife grasped my shaft and pulled it out. A string of fluid still joined my body to my sister's. Christy broke the string with her tongue, then took me into her mouth. My wife was sucking Debbie's creamy residue off of my dick. She sucked me deeply, wanting as much of me in her as possible. I caressed her head and fingered my sister.
"Need more cock" Debbie moaned. Christy took me as deep as possible, gagging a bit, then slowly slid her lips up my shaft. When I slipped out of her mouth she licked my balls, and then guided me.
Now at this point, with all the time that had passed, I was very accustomed to having sex with my sister. Don't get me wrong, I'm not saying it wasn't amazingly erotic. I was, every time, on several levels. The fact that she was married, her husband knew, and of course the fact that she's my sister! But this time was hitting me hard. I was sliding out of my wife's mouth and into my sister's pussy so I could inseminate her. So I could mate with her. So I could breed her.
Penetrating her felt like entering a new reality. Every dripping, slippery, tight fraction of an inch felt like I was creating a new level of connection among the three of us. I was very glad Christy was there, not just approving but participating in the act of impregnating my sister. I kissed her as my rigid, swollen manhood moved inside my sister. It wasn't just Debbie and me fucking. This was the three of us sharing an incredibly intimate act.
Christy pulled back a bit; "are you inside your sister baby? Are you going to give her your sperm? Are you going to fill her up and make her pregnant?"
"I want his cum so fucking bad. I want your baby. I'm going to nurse you both when my tits fill with milk. Feed my body and I'll feed both of you."
I throbbed inside her. My head was spinning.
