Talk about friendly exes!

Gwyneth Paltrow and Chris Martin both attended a Monday screening of Hector And The Search For Happiness in East Hampton, People reports.

Arriving separately, the divorcing couple mingled with friends before and after the screening before hitting the after party at Serena and Lily Beach Market in Wainscott. The pair were accompanied by the Oscar winner's mother Blythe Danner.

"They seemed so comfortable with each other," says an observer. "It was like they were still married," a source told the mag.

Once the night wound down, the Coldplay front man motioned to the A-list actress that he was ready to leave, and escorted her and Danner to their awaiting vehicles. "I don't know what's going on with them, but they seem really happy," another source dished.

We wouldn't rule out a conscious re-coupling!