In the category of rumored new Gossip Girl couples we haven't seen on actual episodes yet, it looks like the soon-to-be-reunited Nate and Blair have some company.

New pictures taken on the Gossip Girl set appear to show Serena (Blake Lively) kissing Gabriel Serrano (new guest star Armie Hammer), her new love interest ...

Will Serena's new love affair take a dark twist?

Click to enlarge many more pictures of Serena and Gabriel, as well as some of Serena and Blair (Leighton Meester), who looks to be turning to her BFF for comfort ...

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