AS soon as we found out Katie Cassidy was stopping by Gossip Girl, we figured her character would be ruffling a few feathers. Turns out we were right! If you don't want the details, look away now.
EW.com's Michael Ausiello spilled some dirt on Katie's character - Nate's new love interest! - and what she'll be up to in Season 4. Here's what he's got:
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