Here are some suggestions.
These are pretty old, but if you don’t mind old art styles you should give them a go:
Kaze To Ki no Uta
Zankoku na Kami-sama ga shihai suru
The Heart of Thomas
All of these feature very troubled main characters and lots of psychological elements.
More modern works you can check out are:
Gray to Blue no Ai Made
Natsu ni Tokeru Himitsu no Koi
Hope this helps!
sorryyy i wrote it wrong http://www.mangago.zone/read-manga/incidentally_living_together/
Here's a link:
http://www.mangago.zone/read-manga/zankoku_na_kami_ga_shihai_suru/
The Heart of Thomas was released as a shoujo at the time, but is a shonen ai through and through. Sorry for the confusion.
Can anyone recommed me some yaoi where the character's will to live is gone? like they had something happen to them in the past and now they are broken, but then they meet this other character seme/uke and they started to love life again similar to
Oni to Tengoku and 3 Ban Sen no Campanella plsss