You show me a beautiful woman and I'll show you a dude who's tired of fucking her
Any one person will have limits, that's the benefit of hobbying. One persons hard limit is another's specialty!
I had a gf once who was into some freaky submissive s&m shit, not my thing really but was fun for awhile. But she wouldn't let me fuck her in the ass. She was bi and we did some hot threesomes but never with a girl hotter than her. We had some crazy times.
But what did I crave? Fucking a chick hotter than her.....in the ass.
Lol there's always something you'd like to do that you can't, unless you SpiceItUp baby!