Wild is the Wind

Destiel AU. Cas is in an abusive relationship with someone he really loves. Dean is just a guy who is looking to find himself, after being told his whole life, who he was, is, was wrong.
He wasn't good at being a marine.
He wasn't good at being a son
He wasn't good at getting better
He wasn't good at living his life.
Dean knew all the things he wasn't but he didn't know who he was.
How these two lives are brought together, well you will have to read to find out.