I love surprising my wife with other guys. I especially love tying her up and blindfolding her then letting men in to suck and fuck and she never gets to see them She has no idea who it was she just had sex with. She knows that most of the guys are strangers to her but she also knows that I sneak in men she knows occasionally for the extra thrill. She often wonders if she's fucked a guy or not when we're at parties and gatherings. I've let a few guys she works with come over the fuck her and a few close friends. Even a few married guys she be pissed out if she knew but she has no idea. So far none of these guys has said anything or let on. There's a few I've let come over again and again. They love fucking her, she loves getting fucked and I love watching. Plus not know whose she's fucked or not fucked is a big turn on for us. I love whispering in her ear that there's a guy in the room who has fucked her and she has no idea who it is.