Wishful Thinking (Grimmons RvB AU fic)

During season 15. SPOILER ALERT (duh..) Grif went off on his own. He's ready to leave his past behind, start over with a new apartment and get whatever dead-end job he can. Simmons is left behind. He's ready to have a mental breakdown because his only friend abandoned him. Weeks pass and the two start to realize just how much they need each other not only for laughs, but for sanity.