The former lovebirds, who broke up in December, were seen in deep conversation at an event

By Sara Hammel and Jennifer Garcia
Updated February 28, 2011 03:35 PM
Jason Merritt/Getty; Kyle Rover/Startraks

When exes Taylor Swift and Jake Gyllenhaal bumped into each other at one of the Oscars‘s most exclusive afterparties, it didn’t look like they were engaging in idle party chatter.

“They were outside near the restroom having a discussion,” a guest at the Vanity Fair bash tells PEOPLE. “It seemed a bit more serious – it certainly wasn’t a ‘Hi, how are you?’ talk.”

The musician, 21, and the actor, 30, started dating last fall but broke up in December.

On Sunday night, Gyllenhaal and Swift were back together for a short visit at the party, and while there was no overt affection between the two. “It seemed like they were catching up,” says the source, “sorting something out.”

Soon after their chat, Gyllenhaal headed out while Swift stayed and partied with two girlfriends. “They completely kept to themselves,” says the guest. “She couldn’t be bothered by anyone.”

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