After some deep introspection, Chuck officially let Blair go on Gossip Girl last night.

At least until next Monday's mask-themed episode, when he makes a pass at her!

Attending the provocative experience that is "Sleep No More" translates to masks, mystery and some surprise romantic twists. Kiss her to set her free? Really Chuck? Do you really believe that?

As we talked about in our Gossip Girl review last night, Mr. Bass turned a major corner when he apologized and bared his soul to Blair. But if he thinks he's moved on from her, he's kidding himself.

Watch the CW and Canadian promos for "The Big Sleep No More" and weigh in:

This is, of course, the long-awaited, often-teased episode in which someone kisses Blair, and in which said kiss is followed by a slap. These promos give us a fairly good idea how that comes about.

Meanwhile, Diana sets her sights on her latest project, Serena, in her quest to ruin Gossip Girl, Dan is out on his book tour, and Nate and Charlie appear to be heating up. Exciting stuff all around!

Share your comments on these promos and thoughts on next week with us!

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