'High School Musical' actor Zac Efron is reportedly dating Lily Collins as the pair were spotted sneaking out of a Los Angeles restaurant together.

Zac Efron

The duo were spotted walking out the backdoor of the STK steakhouse in Los Angeles after enjoying an intimate meal together, reported Showbizspy.

Efron was later seen getting into a chauffeured SUV, closely followed by the 22-year-old 'Mirror Mirror' actress. "Zac literally ran to the car and jumped in, leaving Lily behind.

But Lily kept her cool and took her time. She wasn't as worried about not being seen by us. She probably didn't want to trip in her heels!," an onlooker said.

Efron, 24, previously dated his 'High School Musical' co-star Vanessa Hudgens for four years before splitting in 2010, while Collins enjoyed a brief romance with her 'Abduction' co-star Taylor Lautner.