Arousing porn
This guy wanted his girlfriend to be more depraved in bed and he got this nasty porn video to watch together with her to help her get the right idea of what he wanted. Yeah he expected some change after that but he could hardly expect her to go totally out of control and gag on his cock like a dirty whore. He was shocked and loved it so much the fucking that followed was the best thing that ever happened to them. The power of porn is irresistible!