The 'Pitch Perfect' actress' table tennis skills were put to the test during a coaching session from the 'Gossip Girl' hunk at a party in New York on Thursday (07.06.13).
A source told the New York Post newspaper: ''She looked like she had never played pingpong before. Chace had to teach her how.''
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 a steamy sex scene on the bonnet of a car, but despite their on-screen chemistry, it seems the pair are just friends. Anna, 27, was overheard telling Chase she'll be spending her summer in New York City, while the 27-year-old heartthrob said he'll be hanging out in Los Angeles.
Anna split with her long-term boyfriend Edgar Wright in March. The pair had been dating since 2009 when he directed her in 'Scott Pilgrim vs. The World'.
Meanwhile, Chase has been seeing Rachelle Goulding for the last few months, but according to his friends, isn't ready to get serious with the model just yet.