Scared of intimacy ?

So there's a guy whom I'm 100% in love with. But for some reason, even though I'm sexually attracted to him, I can't seem to make out w him or get touchy feely. I feel all weird. But im fine with cuddling, neck kisses etc. I just can't seem to move past 1st base and I really want to, like I think about it and dream up scenarios. But when we're doing stuff i end up saying stop and he does but then we get so frustrated.

And even with past boyfriends it's been the same. And I can't seem to ever take the initiative to start up something 💋

Am I incapable of intimacy? Helppppp!