Zac Efron and Vanessa Hudgens sparked speculation they have rekindled their romance after the pair was reportedly spotted kissing on a night out.

Last month, reports suggested the actress had parted ways from her High School Musical co-star after the relationship "ran its course."

But the pair was said to be "all over each other" as they partied with pals, including Brittany Snow, at Los Angeles' Eden nightclub on Friday night, prompting gossip they have reconciled.

An onlooker tells E! Online, "They were inseparable throughout the night, seen dancing, drinking Belvedere (vodka) and canoodling. (Vanessa) only broke from Efron's side to dance with Brittany on the couches at their table.

"They were directly next to our table and were all over each other, dirty dancing and making out."

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