Strap One On

I have a fantasy that my wife knows that I want to have sex with a guy. One morning when she leaves for work she says " I know you want an sexual experience with a guy so today I think you should do it". After she leaves I frantically search online for someone that can meet up today. After some searching I connect with guy and he agrees to come over in the afternoon. Upon his arrival we have sensual kissing and begin to explore each other. Suddenly, I hear my wife coming up the stairs as she's home from work and she sees us and just wants to watch and masterbate. She watches and decides she wants to use the strap on we have on me while I preform on my partner and we all orgasam.