he's not into this stuff

i married him because i thought we were similar but turns out he's totally vanilla. and yeah it's been a few years now and i still feel like there's this huge gap between us in the bedroom, you know? we cuddle and kiss sometimes but when i try to suggest anything more adventurous, even just talking about it, he shuts down completely. feels like nobody ever talks about this with their partner and then it builds up inside of me and gets harder to not feel like an outsider in our own relationship. so last week, we were laying there after another night of nothing happening and i finally asked him if he could at least try being more open to things that turn me on, even if they don't excite him. said he was worried it'd make me uncomfortable, but honestly just felt frustrated and lonely after the talk. so here's my question for you all, am i supposed to hide who i really am or should i just let go of trying to please someone who isn't interested? comments?