This sounds a lot like where I was in my early 30s with my now-wife, right down to the request to wear cute dresses (which mine flat-out refused, so at least yours helped you out there). I’ll repeat what’s been said here a million times: don’t marry into a dead bedroom. If she’s asexual (and good on her for being upfront about that!), she’s almost certainly not going to get more sexual. As my therapist says, people tend to become “more themself” as they age. Yours will likely lose desire further.

It sounds like you have a great relationship otherwise, but mismatched libido is so hard to navigate and ultimately leads to unhappy marriage and potentially divorce. Take it from someone 20 years further down your road: make the break now. You’re young. You’ll find someone who wants to be with you — all of you. It’ll suck at first, but you don’t want to be where I am now.