There's a part of me he's never seen

I'm soon going to marry the love of my life. We are in our mid 30s. And yet there's a part of me (the sexy dancing party girl) he has never seen before. I can't even bring myself to grab and ravage him like I'd like and picture it in my head. Yet, I have no idea why this. I feel shy and maybe afraid to be judged? I'm very conflicted as to why I can't show him a part of me he would love to. Does this mean we aren't meant for each other? Anyone has been in my position?