Chuck won’t be the only one getting some action as Poésy’s new character shakes things up: Former “Melrose Place” star Katie Cassidy is set to ignite Nate’s (Chace Crawford) love life next season.

“I hope we cross paths, but it would be weird to have a completely different dynamic [onscreen],” Meester said of Cassidy who’s also her co-star in the upcoming “Monte Carlo.” “I mean, it would be really fun. I think she’s coming on the show, maybe, to cause a little bit of trouble. She might not say it, but I will. I think she’s very much capable of that, at least in the show. I think [Nate's] a total playboy and needs to be single and I think [Katie's character] is a bad girl, so maybe they are good for each other, actually,” Meester said.