What is up with this Juliet character?!

With each passing Gossip Girl episode, I get more and more suspicious of this Juliet character and what she could bring to our favorite Gossip Girl gang. Well now we've got some spoilers on the havoc she will be wreaking on Gossip Girl.. check it out!

Question: Gossip Girl has been amazing this season! It feels like the show has hit its stride! What’s coming up for these amazing Upper East Siders? —lec
Ausiello:
Something wicked their way comes, I’m afraid. Juliet’s butting in is going to lead to a major couple breaking up.

No word yet on who this major couple is.. anyone have any guesses?

Source: Ausiello Files