I need an opinion and its not about pregnancy!!

Ok, so my S/O asked my why am I so obsessed with a porn book called Fifty Shades Of Grey. I tried explaining that its not just a porn book. And tried telling him what's it about. He sat there telling me its just like all the other love movies, they all have the same plot. That a player falls in love w.a girl who's not as interested BC of who he is and the player is willing to change. I disagree 100% what do you girls think. Im tryna settle a soon to be war.