Chace Crawford revealed on the XOXO with Jessica Szohr podcast, hosted by Jessica Szohr, who played Vanessa on the series, that he and Leighton Meester had an "instant" connection while auditioning for the CW's Gossip Girl.

The Texas native, who starred as Nate Archibald, said that during the final audition in Burbank, he kept thinking, "Who's going to play Blair Waldorf?"

"They let me into this massive waiting room," Crawford recalled. "And there was this one girl in this chair at the very end, with her back to me...and I kind of went, 'Hi, let me introduce myself,' she turns around, headband on, it's Leighton."

"I assumed like, that's the girl! Like if she can act, I'm sure she can,'" he said. "We kind of had an instant friendship connection," Crawford continued. "Easy to talk to."

But Meester wasn't Crawford's only off-screen best friend. Crawford lived with Ed Westwick, the one and only Chuck Bass, while filming Gossip Girl for two years.

And as Szohr puts it, with rooftop parties, dinners, and football watch parties, it was "one of the best" parts of her "entire experience."

Crawford recalled asking Westwick, who was "barely 18 at the time" and had never lived in the states before, to be his roommate after seeing the price of apartments.

"Me and my mom started going to New York and look at places, and... I knew New York was semi-expensive, but like, it was insane. So I look, and I was like 'hey buddy,'" Crawford said with a laugh.

We wonder what Serena van der Woodsen and Chuck Bass would say about this.

Listen to XOXO with Jessica Szohr, as new episodes drop every Wednesday.