My wife's friend/our roommate
I my wife's friend lives with us and the other day I walked in on her masturbating on the living room couch. Nothing happened besides her screaming and locking herself in her room until I promised not to tell anyone (including my wife). I had never really thought of her in a sexual way before, but the thing is she was wearing one of my dirty exercise shirts. Now all I can think about is plowing her like a cornfield.