All that watching vanilla porn really fucked you up. You wanted to fantasize that it's you fucking that hot female, but reality always comes around to smack you in the face. You knew as you were watching that you could never have a woman that hot, much less please her. You're not hung like a porn star and you certainly don't know how to fuck like one. Soon enough your fantasies turned into you being a cuck for her, watching her being pleased while you sit and watch quietly. Looks like porn made you a cuck.