On this week's Gossip Girl, Chuck Bass advanced his war on Blair by moving into a place she felt safe. Chuck took the battle to Columbia University in the City of New York.

After enrolling in some classes on a whim (because that is how the Ivy League works), Chuck uses his business savvy to get a student assistant position Blair coveted.

In other news, a rumor about Serena and an STD leads newcomer Juliet to recount the many connected dalliances of our privileged protagonists.

Those crazy kids! Always doing each other!