At a recent event, Gossip Girl creators and exec producers Josh Schwartz and Stephanie Savage admitted that they're no longer sticking to the books for the sake of television.
Josh hinted at a reprise of Michelle Tractenberg's character, Georgina Sparks, saying, "It’s safe to say you haven’t seen the last of her."
There is also rumor of a romance between Chace's and Taylor's characters, although Chase expressed some reservations regarding "because she’s [Taylor] so young and that would be weird."
It's called acting!
And, it's not a rumor - it's happening!