Dan Humphrey (Penn Badgley) is about to become a major player in the game to win Blair Waldorf (Leighton Meester)'s heart!

In the wake of last night's AMAZING Dair-ific teases ― seriously, they totally had us going for awhile with all the sneaking away! ― executive producer Joshua Safran confirmed to E! Online that Dair fans will see the escalation of the plot they've been so eagerly anticipating!

"What I said at the top of the season was this was pretty much going to be a romantic love triangle between Chuck (Ed Westwick), Louis (Hugo Becker), and Blair, and that Dan was going to be more a friend to Blair," Safran said. "This second half of the season, that triangle absolutely becomes a square in a major way. That is where that story is going."

As for pay-off... well, naturally, we won't know for sure until the time comes, but our excitement is building over all the possibilities! We know from what Ed Westwick has been saying about Chuck's "obsession" with Blair that he certainly won't be backing down any time soon. But whose affection will it be that finally tips the scales and has Blair running from the altar?! (Shhh shhh, we know in our hearts she's gonna run, dangit!!)

Something tells us the triangle becoming a square in a "major way" could mean something BIG is on the horizon...