Suggest me a book about waiting for someone

Unfortunately I’m in my hopeless romantic era and I’ve been so so in love with a man but for whatever reason he isn’t available now.

Rationally I know I should move on but that’s not the point here —

I would like to read something about right person wrong timing. Whether or not it’s a happy ending is fine.

Recently I’ve finished Normal People and One Day and I do like them!

by jumpingsquirrels