Glee Newcomer Grant Gustin on Forming a Love Triangle With Darren Criss & Chris Colfer

West Side Story tour veteran Grant Gustin is headed to Glee to play Sebastian, a member of the Dalton Academy Warblers who has his eyes set on Blaine (Darren Criss), and it sounds like the new character is up to no good when it comes to Blaine's relationship with his current boyfriend, Kurt (Chris Colfer).

"I'm making moves in my first episode to split them up," Gustin told The Virginian-Pilot. "Maybe I will split them up, and maybe I won't. No one knows yet. I don't even know."

Gustin will make his first appearance on the show's November 8 episode and expects his character to return to the show. "It wouldn't make sense for him not to be around for a little bit to create some drama and stir up the pot a little," Gustin said. "It could be something huge. That's the exciting part."

Glee returns with new episodes on November 1 on FOX.