Penn Badgley and Blake Lively broke up over four years ago, but now the Gossip Girl actor is finally opening up about what it was like to kiss his ex-girlfriend when they were on the show together. (Hint: it's not pretty!)
The actor says that it was totally weird smooching his ex, and even called the one after their breakup his worst on-screen kiss ever.
Click through to find out more of your fave stars' worst kisses on film and television, and let us know if you could pick up on any awkwardness in the comments!
Penn Badgley's worst kiss was with Blake Lively on Gossip Girl.
"The worst [kiss]? Maybe Blake after we broke up," he said on Watch What Happens Live.
We totally understand how that could be awkward!
"We were consummately professional, to be honest. I think we should both pat ourselves on the back for getting through it. You know, anything is complicated in that way, but we handled it."