As if the ending of last night's "Touch of Eva" didn't do so already, a couple of promos for next week's Gossip Girl hint at some major drama on the Chuck-Blair front.

The CW synopsis of "Goodbye, Columbia" says that Blair decides to take a class with a powerful businesswoman, Martha, while a new student plans to thwart Blair.

This new student tries to become Martha's understudy instead of B. That's gotta be Chuck, right? Enrolling at Columbia just to mess with her? Right up Bass' alley.

Are we on the money there? Here's the first promo for the episode ...

[video url="http://www.tvfanatic.com/videos/goodbye-columbia-promo/" title="Goodbye Columbia Promo"] [/video]

There's also a blast from Gossip Girl that targets Serena. Follow the jump for an additional "Goodbye, Columbia" promo from Canada and a longer one from the U.S., too ...

[video url="http://www.tvfanatic.com/videos/goodbye-columbia-ctv-promo/" title="Goodbye, Columbia: CTV Promo"] [/video]

[video url="http://www.tvfanatic.com/videos/goodbye-columbia-extended-promo/" title="Goodbye, Columbia: Extended Promo"] [/video]

We gotta ask ... whose side are you on?

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