Gossip Girl is about to step up its love game.

On tonight's episode, Ed Westwick's Chuck Bass will start playing for the other team - or at least masquerade as such - and kiss a guy on the show.

No word on how much he'll like the gay kiss, but his on-screen love, Leighton Meester, divulges that her own Blair Waldorf may be the mastermind.

"Well, I guess that I can tell you some things," she told MTV on the set of the new music video for her duet with Robin Thicke, "Somebody to Love."

"No, it's not tied into the threesome. I think all of this is so everybody grabs their attention, and we are all in college now, so we can definitely push the limit a little more with the sexuality, which is fine by me."

"I sort of make the kiss happen. I can tell you that much, and that's it."

Leighton Meester previews tonight's Gossip Girl and beyond.

As if the latest steamy story lines on Gossip Girl weren't attention-grabbing enough, Lady Gaga will also be making an appearance later this season.

"I don't know what I can say, and what I can't," Meester said. "But it was really cool. It was very avant garde and kind of gothic, and she's pretty cool."

While Penn Badgley suggested last week that Gaga would have something to do with Dan Humphrey's storyline, Meester clarified that isn't exactly true:

"She just makes a cameo, and we talk about her for awhile," she said. "But, yeah, we all have a story line where we put on a cabaret with her songs."

"Other than that, you'll have to wait and see."

Steve Marsi is the Managing Editor of TV Fanatic. Follow him on Google+ or email him here.