I'm stuck on what theme song to give
Brego... I've got these ones that I think suit him.
Topless - Breaking BenjaminThis song is pretty much about love hurting, not to mention it has a pretty awesome guitar solo.
Rammstein - RammsteinSlow and heavy, and pretty badass in my view... even though the song is German.
Not screamo.
Papercut - Linkin ParkI used this song once for a different character, although it didn't really suit them. The part near the end is my favourite bit. (2:05)
Note: I don't expect you to listen through all of them, but at least listen to the first 30 seconds of each song.