Am I just not good enough?

So, my fiance and I have a pretty normal sex life. That's the problem. He's always talking about wild things he's done with other women, but when I want to try these things he just acts bored or says "maybe later". He won't listen to what I want to do during or before sex, so I try to casually bring it up throughout the day or even plan it, and his response to that was "that's not sexy".