Glee hostage fanfic

[brooke griffin]

Hey, I'm looking for a story where Blaine is planing to sing to kurt to ask him out on a date when Karofsky walks in with a gun and takes the warblers hostage.  It is told from Blaine's POV but the thing i remember about is that Karofsky slit kurt's wrist and his own.  I hope that's enough info.