Thank you for anyone who can link me to this fic:
It was on tumblr, probably a reaction fic to "On My Way" that deals with Blaine's physical reaction to the discussion Mr. Schue initiates in the auditorium. Blaine has been depressed, and has attempted suicide in the past. Cooper has been helping him, and with Kurt' support, he has been much better. But David's attempt brings back the temptation. He relapses (I think) but Cooper catches him in time. During the auditorium scene, Blaine confesses to the Glee club that he has been having suicidal thoughts - while Kurt knows about the past, it is the first time to learns how David's attempt affected Blaine. A lot of the dialogue was taken directly out of the episode (Schuester and Mercedes in particular).
Who recognizes this fic? I am desperate to find it, but my search is just turning up a lot of blangst.