I'm your girlfriend and I've convinced you to let My ex stay with us while he's in town. While we're getting ready, you notice Me putting in a lot more effort than what I usually do. I assure you that you have nothing to worry about, and I only ever like him for physical reasons. I sense your insecurity, but I tell you that tonight, My ex is going to listen to Me get fucked by a real man, and the only reason I'm dressed up is to make him extra jealous of us! He arrives, and I'm immediately flustered, ignoring you in favor of him. I tell you he must be exhausted, and I just wouldn't feel right having him on the couch. You grudgingly accept, but are wondering what happened to our plan? I tell you,I've changed my mind, and we can do that when he leaves! I promise, I'll even leave the door open so you can see everything. A few minutes after I turn the lights off, you hear giggling and whispering in the dark, then kissing....and then moaning.... You can't help it anymore, you have to turn around and see what's happening! I apologize, but make eye contact while he's inside of me, telling you how much I've missed his dick. I make you jerk off to a real man fucking Me.