How to get comfortable having sex after a failed relationship?

I F21 recently went through a devastating breakup. Logical and physical I know it’s for the best and I’ve come to terms with that. But sexuality I don’t know if I can recover, I’ve never felt anything like this. I can’t orgasm without bawling my eyes out immediately afterwards. People I used to find attractive, no longer interest me, almost as if I’m suddenly asexual. I’ve always been very in tune with my body so this has been terrifying. I’ve never heard anyone else deal with something like this, any advice or similar experiences? Does it go away, what helps the process?