The onetime couple broke up in 2010 after dating for three years, and in 2012 Lively wed her Green Lantern leading man, Ryan Reynolds. Badgley, meanwhile, has now found himself a new ladylove in actress and music royalty Zoe Kravitz.
Still, the exes couldn't quite escape each other, having costarred on Gossip Girl until the series ended last December—a scenario, Badgley tells Elle magazine, that wasn't as fraught as many might think.
"No, we were ultimately professional," the 26-year-old tells the magazine when asked whether it was awkward working with his ex after she had tied the knot.
That said, Badgley—who can currently be seen in the indie flick Greetings From Tim Buckley—says that his history with Lively presented its own set of complexities on set.
"I don't know if I can distill it into a sentence, or even articulate it," he explains. "We were very much caught up in the show, which itself was a six-year endurance test. Our relationship was a part of that and helped us through it. I mean, like anything valuable, it was good and it was bad, and it was a learning experience."
Badgley, however, had a much more straightforward answer when asked if he sent Lively a wedding gift.
"No, I didn't," he said.
That doesn't mean he doesn't wish them well: Back in September, shortly after Lively wed Reynolds, E! News caught up with Badgley at the Toronto Film Festival, where the actor said he was "happy" to hear of his ex's nuptials.
"That's great," he added.