“Matt, I think I owe you an explanation. Please don’t think poorly of Bill or me. As I told you, Bill is the only man I have ever been with until tonight. We’ve talked about the fact I never experienced another man many times. While I was always curious, I would never cheat on Bill. We talked about it and decided that if you were willing, I would have sex with you,” Carol said.
“When did you decide to have sex with me?” I asked.
“You may not believe this, but we decided this morning. We talked about it a few times over the past couple of days but didn’t think it would come to fruition. Carol was afraid of how you’d feel about her and us. I told her I would support her regardless of what she decided. When she said she wanted to drink tequila tonight, I knew she made up her mind.
“I’m sure you’ve heard about cuckolding and hot wives. I assure you this is neither one. What we are doing is helping your sister fulfill something that’s been nagging at her,” Bill said.
“After my wonderful hubby gave me his blessing, I decided to see where things would go. If you weren’t receptive, I would have spent the rest of my life wondering what it would be like to suck, fuck, and make love to another man. This isn’t something I could do with anyone other than you, Matt. I could never have sex with a man I didn’t love,” Carol said.
“And you’re okay with me having sex with Carol?” I asked Bill.
Nodding, Bill said, “Yup, I sure am. I want Carol to know what it’s like to have sex with another man, Matt. I’m happy the other man is you.”
Smiling, I said, “I feel honored you’d even consider me. So, now what?”
Reaching between my legs, Carol caressed my cock, causing it to grow. She smiled at me, leaned close, and said, “Do you think what they say about kissing your sister is true?”
“There’s only one way to find out,” I said.
Carol pressed her mouth to mine. I felt her tongue against my lips and let it into my mouth. As we shared a kiss meant for lovers, not siblings, I held the back of her head with one hand while massaging one of her breasts with the other. Moments later, we were making out like lovers. Without removing her mouth from mine, Carol shifted and straddled my legs. I pulled her closer, pressing her firm tits against my chest.
As we kissed and caressed each other, my sister rubbed her mons against my hard cock. She lifted her hips, positioned my dick between her legs, and lowered her body. I let out a moan as my cock pierced Carol’s wet pussy. She wiggled while pressing down, embedding my entire cock in her hot wet vagina.
While I fucked my sister, I wasn’t even aware we had an audience. I knew Carol’s husband sat near us, but I didn’t care. My entire focus centered on making love to my sister. Gripping her hips, I held Carol still while I thrust up into her. Her breasts covered my face, and I took advantage of the position. Moving my head, I sucked one of her firm nipples between my lips.
Moaning, Carol held my head against her chest. I moved my mouth from one breast to the other, sucking and nipping her nipples. When I stopped thrusting in and out of her pussy, my sister started to move up and down. She lowered herself until our pubic bones met, wiggled, and then bounced up and down. Taking a moment to glance at Bill, I saw him stroking his cock while watching us. When he winked at me, I realized he enjoyed watching me fuck his wife as much as I liked fucking her.