Specific fic: Destiel with suicidal Dean

[cpctc999]

I read this AU Destiel fic a long time ago where Dean is depressed and sometimes it gets very bad. Sam is with Jess and they try to help him. Then he meets Cas and they get together. But Dean has an episode of extreme depression and ends up killing himself, thinking Cas would be better off not having to deal with him. I think he jumps out window in front of Cas? Cas then later also kills himself.

Yeah, very tragic ending. But if anyone can help me find it that would be great!