Gossip Girl season 4 may have officially ended last night, but there's still plenty of cast rumors buzzing about! This week on our radar, Blair herself, aka Leighton Meester, has been spotted getting cozy over the weekend with Justin Long in Hollywood. No confirmation from either of their reps, but they look like a pretty cute couple if you ask the ladies of the SideReel team. What say you -- do you think Leighton & Long make a good pair? Watch the full scoop in the newest Gossip Girl TV News video below!