Info on Juliet's brother, Chuck and Blair, and Serena's new love interest!

Is it just me or is this season of Gossip Girl more wrought with mystery than others? I mean, really, what's up with Juliet? And are Chuck and Blair going to keep doing this whole we-hate-each-other thing? And is that playboy-next-door going to be Serena's new boyfriend? Check out these Gossip Girl spoilers that'll answer all those burning questions!

Ryan in New York: Gossip Girl, please! What is up with Chuck and Blair? And when will we know why Juliet is tormenting Serena?
So much hate to spew, so little time...Chuck and Blair are all about hate sex for the next little while. Lots of hate sex, so put the kiddies to bed, y'all! As for Juliet, we'll learn that her brother is connected to Serena's past (like, past, as in before we even met her on the show). He got thoroughly screwed over by Team Van Der Woodsen (that's my understanding anyway), and Juliet is helping her brother seek revenge.
Wendy in California: Is Serena really, truly going to move on from Dan and Nate on Gossip Girl now that they say it's over?
You know she'll be hooking up with Mad Men's supersexy Sam Page soon enough, but how's this photo for proof? Not only is Serena falling head over heels for her new guy, she's already flaunting it in from of mom. Classay.