Your Friend's BF

This love triangle is one of the trickiest in the book -- and for good reason. Remember when Serena was crushing on Nate while he was with Blair? It totally messed up Serena and Blair's friendship, and made things awkward within their whole group of friends. It's best to keep quiet if you're the Serena in this sitch. Not only would it be awkward for the guy knowing that his GF's friend likes him, but you'd also be causing a major fight between the couple and between you and your friend. And plus, no guy is worth losing a friend over. That's the most basic code of girlhood!

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