We do know that if a main castmember were to decide to leave Gossip Girl to pursue other projects, it would not be an easy decision on their parts by any means. Kristin talked with Penn Badgley and it sounds should any of 'em say au revoir to Gossip Girl, at least you'll know they won't go quietly:
"It's been a rollercoaster. It's been up and down and it's been the most definitive experience of my life," he tells us. "And I know it is for every one of the cast members regardless of what we may say on or off camera. It's huge. It's been monumental for all of us."
His comments on "Dair" storyline:
"It doesn't end how you think it does at all. I can't say [if it's good or bad]. It's sudden."