Efron spotted on 'date' with Teresa Palmer

Zac Efron has been spotted on a supposed date with I Am Number Four star Teresa Palmer.

The 23-year-old heartthrob was believed to have rekindled his romance with long-term partner Vanessa Hudgens following their December split, but People reports that Efron was spotted looking cosy with Palmer at a reception for her upcoming comedy Take Me Home Tonight on Tuesday.

A source claimed: "There was definitely some hand-holding. The two ate together and seemed really engaged in conversation. They seemed really into each other.

"They weren't trying to hide their affection at all, even though they knew people were watching them."

The rumoured couple were later seen in West Hollywood nightclub Voyeur, where an onlooker described them as being "side-by-side the entire night" and engaging in a raunchy display.

"He was grabbing her butt and doing very suggestive dancing. Then they made out a couple of times standing up where they were dancing. I was surprised they were doing that in front of everyone. It was like they didn't care."

The source added to E!: "They were there for like an hour and left together."

Efron has also been linked to actresses Rumer Willis and Taylor Schilling in the wake of his separation from Hudgens.