Kate Bosworth and Michael Polish
08/10/2011 at 10:00 AM EDT
Newly single Kate Bosworth
and director Michael Polish
shared an affectionate night
at the Coldplay concert, sponsored by Samsung, at the Los Angeles Tennis Center at UCLA. The two giggled together as Polish wrapped an arm around Bosworth's waist and kissed her on the cheek. They also snuck in even more kisses during the show and looked "totally adorable" together, an onlooker says. Meanwhile, lead singer Chris Martin
's wife Gwyneth Paltrow
stayed under the radar, hanging backstage during the concert.