Chris Martin and Heather Graham enjoyed a fun, barefoot stroll along the beach in Malibu, California on Sunday, and the pair couldn't have looked happier.
The Coldplay frontman and the actress were all smiles as they chatted while walking up and down the sandy shore of Paradise Cove -- with Martin rocking a bright blue sweatshirt and black sweatpants and Graham donning a flowy, low-cut sundress and wide-brimmed hat.
It's unclear how the two know each other, but they sure seemed to be enjoying each other's company. According to an eyewitness, the pair left a residence near the beach and walked together for nearly a mile and half before returning to the house.
Martin, 39, is currently in between shows on Coldplay's "A Head Full of Dreams World Tour." The band is set to resume its tour on May 24 in Nice, France.