Jim has arrived

You walk into the house behind Kristen, and Amy is farther ahead. You're all still naked. Kristen's ass is jiggling deliciously, and you just want to slap it silly.

You hear a wolf whistle from the other room, and when you and Kristen enter, Amy is kissing Jim and unbuttoning his shirt. Jim has both hands on Amy's ass, squeezing pretty hard. Kristen turns and kisses you briefly and then whispers in your ear, "Jim's turn." You grin at her and nod. She walks over behind Jim, who has his eyes closed, enjoying his deep kiss. She kisses his neck while she reaches around between him and Amy to undo his belt.

Jim breaks the kiss and says, "Hey! What are you doing?" He turns his head and sees that your girlfriend is naked as well. His eyes go wide at the sight of her.

Amy says, "Well, John just fucked my ass, so we thought maybe you'd like a shot at fucking Kristen. Isn't that right, John?"

You just had your first threesome; the thought of having a full-fledged foursome has your mind twirling at light speed. You say, chuckling, "Turnabout is fair play, I guess. And her ass was sweeeet!"

Amy has his shirt open, and Kristen pulls it off his body. She had already unzipped his pants, so Amy pulls them down along with his boxer shorts. She also gets his shoes and socks off. Jim is now naked like the rest of you. "If you're okay with it, I'm in."

Kristen and Amy sandwich him again, Amy kissing his mouth, and Kristen kissing his back.