Novels about heartbreak

Hello.

I am going through a pretty heavy heartbreak right now and I am looking for some fiction to elaborate it. I don't need something that distracts me, I'd rather prefer something I'd relate to and let myself feel the emotions I tend to shove down.

I am looking for raw and unfiltered characters who love too much, and are met with little to no intensity. Messy situations, tri-dimensional and morally grey characters. Something that touches the right chords, that makes you connect with the characters.

I was recommended "Call me by your name (the book)", but I am looking for other recommendations too.

thanks in advance!