'Glee' Season 3 Episode 15 'Big Brother' Sneak Peek: 'Somebody That I Used To Know'

Glee season 3 returns from hiatus next week with episode 15, "Big Brother," featuring Matt Bomer of White Collar guest starring as Cooper Anderson, Blaine's older brother. They'll be singing together, and now one of those performances has been released.

Season 3 Episode 15 "Big Brother" Sneak Peek

It wouldn't be a family reunion without some conflict, and that's certainly true of the Anderson brothers. So what better way—especially on this show—to deal with that conflict than to sing about it on the auditorium stage, with a look back at how their relationship has been in the past?

In the latest Glee season 3 episode 15 sneak peek from "Big Brother" (below), Blaine leaves Kurt standing in the hall and goes to the stage to sing out his feelings with Gotye's "Somebody That I Used to Know." Cooper joins him, and it's very clear that Blaine's hurt. There's a flashback during the song to their childhood, with Cooper holding a toy out of Blaine's reach and pushing him back. Conflict isn't new for the Anderson brothers. The performance ends with the brothers facing each other on stage, space still between them. It doesn't look like this is something that's just going to be fixed with this one song.

Darren Criss and Matt Bomer both sound amazing—alone and together—and just after this performance, you can't help but want Bomer booked for another episode already. It looks like he's not going to disappoint as Cooper, vocally or storyline wise.