Grant Gustin Poised to Be 'Glee' Series Regular

What's good news for “Glee” flirt Grant Gustin may not be great news for fans of the show's Blaine and Kurt.

Gustin, who plays Dalton Academy Warbler Sebastian, tells “The Hollywood Reporter” that he'll continue to be "in and out" on the current third season of the Fox musical with an offer "on the table" to be a series regular for Season 4.

While Sebastian has appeared in two episodes thus far, he's already set his sights on Darren Criss' Blaine, challenging Kurt (Chris Colfer) for his boyfriend's affections.

Could there be more trouble ahead for the on-screen couple? Not so fast, Gustin says. As of the Michael Jackson tribute episode -- now set for Tuesday, Jan. 31 -- Sebastian will cool his romantic pursuit of former Warbler Blaine.

"As of the Michael Jackson episode, he's slightly separating himself [from Blaine] and is less flirtatious and more of a dick," he says. "He's not necessarily pursuing Blaine anymore. He's not as into it as he has been in the past. Blaine's not giving him anything to work with and he's probably a little bored with it and moves on."

As for what the future holds for his character, Gustin noted that he's "open to the idea" of a Sebastian-Dave Karofsky (Max Adler) pairing. "It'd be fun," he says, adding that he'd also like to follow in Blaine's footsteps and transfer to McKinley High as Criss' character did this season.

"Being a Warbler is totally bad-ass but I wouldn't be surprised if at some point he made the switch [to McKinley] like Blaine did," Gustin says. "As of the Michael Jackson episode, he's still a Warbler."

“Glee” returns Tuesday, Jan. 17 at 8 p.m. on Fox.

– The Hollywood Reporter