The 'Pitch Perfect' actress' table tennis skills were put to the test during a coaching session from the 'Gossip Girl' hunk at a party, reported New York Post.
"She looked like she had never played ping pong before. Chace had to teach her how," a source said.
The pair have been firm friends since shooting romantic comedy 'What To Expect When You're Expecting' together last year.
In the movie the pair shared an intimate scene but despite their on-screen chemistry, it seems the pair are just friends.