With Dan's novel taking over this week's episode of Gossip Girl, fans were given a brief reprieve from the question that has dominated this season so far: Who got Blair Waldorf pregnant?

The latest Gossip Girl promo shows Blair revealing to her mom that she's about to make her a grandmother, with the obvious implication that the father of her unborn child is fiance Louis.

Fans, however, know that's not exactly a sure bet. Far from it, in fact.

On the subject of who the father is, TV Line's Michael Ausiello writes:

"I honestly don’t know. What I can say, however, is that there’s a kiss coming up. A kiss that will whip a passionate ‘shipper base into a frenzy ... A kiss that will have office water coolers buzzing for weeks to come."

He continues, even more cryptically, "A kiss so hot it’s followed by a [spoiler alert]!"

Well, that's certainly a lot of hype, but the show has lived up to it so far this fall.

We have to assume the kiss involves Blair, given everything else going on... but who will she be locking lips with? Furthermore, what will bring about this epic kiss, and what implications will follow?

Share your theories below, and vote in our ongoing survey:

Who is the father of Blair's child on Gossip Girl?

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