Girlfriend learns your secret
(You let yourself into your girlfriend's apartment, and find her at the sink.)
(God, she looks so hot. You've been dating for a year or so, now, and you're still always stunned at how amazing she looks, dressed and undressed. The sex has been amazing, so far, because of your mutual attraction for eachother... but it's always been missing something, for you at least.)
(There's something about her that has always made you want to give into her more than you do. When things start to get hot, and you start to get turned on, all you can think about are those sites you see on the internet... those sites with girls who take control of their men, make them submit, kneel in front of them...)
(But you've never had the courage to tell her how you feel.)