Blair and Serena's new beaus

From Ausiello : "Leighton Meester's real-life beau, Sebastian Stan, will be reprising his role as the shifty Carter Baizen. He'll appear in the next two original episodes and, per my source, his mission is twofold: to mess with Chuck and hook up with Blair. Don't shoot the messenger!"
As for "Serena's new grifter beau, Gabriel (Armie Hammer)? She's met him before -- only she can't remember where or when."
For Blair, if it's something they had in mind, ok. But if they're taking advantage of the fact that they're real-life lovers, I don't like that ! It would mean that it's either a publicity opportunity for the show or that maybe Sebastian Stan couldn't find any work and his girlfriend helped him ! It's lame ! But I'm not against keeping Blair and Chuck appart for a while ! On the contrary ! Plus, we all know that guy won't last since Nate is in the picture for now !!