They reportedly giggled and snapped pics with one another all night. Ch-ch-check out some of their flirting before and during the big show on Instagram (below)!
This list features Zac Efron’s ex-girlfriends along with additional information about them, such as when they were born and what they do professionally.
These women come in all shapes and sizes, but what they all have in common is that they're all women that Zac Efron has either dated or hooked up with.
Romance rumors were first reported by gossip site Hollywood Life, with a source claiming the pair have been secretly dating for months.
The source said they had instant chemistry on set and Zac was attracted to his co-star because he thinks she is more 'mature and sophisticated' than the other women he's been with.
Rumor has it the stars are dating after meeting on set, and this behind-the-scenes pic sure isn't silencing those rumors.
Alex captioned the photo, "@mtv movie and tv awards backstage shenanigans with @zacefron #Summerand Brody #Baywatch" MORE: Zac Efron, Carrie Underwood, and More Stars You Didn't Know Have a Third Nipple!" CLICK HERE to view "All The Ladies Who've Romanced Zac Efron! After meeting on the set of what should be called BAEwatch with that attractive a cast, the two supposedly hit it off and have been secretly dating for months already. It's not hard to get jealous of these women that Zac Efron has gone out with, so try your hardest to contain your envy.According to recent rumors, Zac Efron is currently dating costar Vanessa Hudgens received huge press.Zac commented on the snap writing: 'Heck yeah - I'm officially excited for the MTV Awards.