Robert Pattinson & Kristen Stewart: Coachella 2013 with Katy Perry!

Kristen Stewart chats with boyfriend actor Robert Pattinson during Day One of the 2013 Coachella Music Festival on Friday night (April 12) in Indio, Calif.

The on-and-off-screen couple partied it up with their friends, which included Katy Perry, at the festival.

Robert, 26, sipped on a Gatorade drink while the group watched Jurassic 5 perform at the festival.

Earlier in the week, Kristen and Rob reportedly celebrated her birthday at Malo Restaurant.

A source shared with People, “They celebrated with Mexican food, beers and margaritas. Kristen was in a great mood. She and Rob seemed great too. They were a bit affectionate, but mostly mingled separately.”