My Wife Fucks Her Friend On Our Bed While I Watch

I walk into the bedroom and catch my wife with our friend. They're naked and going at it right on our bed. She's on her back with her legs spread wide, and he's shoving his hard cock deep inside her wet pussy. Her tits are jiggling with every thrust. I stand at the door, frozen, watching as he fucks her right in front of me. My wife moans and begs him to fuck her harder, her ass sliding on the sheets. He flips her over onto her knees and pounds her from behind, grabbing her hips and slamming his dick into her. Our bed creaks as they fuck. She looks back at me, her eyes locked on mine while her friend stuffs her pussy. After a while, he pulls out and jerks his cock until he shoots his load all over her back. She lies there, smiling, covered in his cum. And I just stand there, my cock hard in my pants, knowing she's done this before on our side of the bed.