She shared the snap on Instagram and captioned: '@mtv movie and tv awards backstage shenanigans with @zacefron #Summerand Brody #Baywatch.'In the lead up to the event, Alexandra and Zac expressed excitement to be sitting next to each other.
The actress posted a snap of herself with her's and Zac's designated seating areas which were next to each other.
Zac commented on the snap writing: 'Heck yeah - I'm officially excited for the MTV Awards.
Innerestingly, those dates would be right around the time Zac broke up with Sami Miro. Well, while we're waiting for confirmation from the notoriously private Efron, we thought we'd take a look at the entire roster of models and actresses who supposedly were sweet on the sexy star.
Apparently they couldn't keep it under the radar ENOUGH during the MTV Movie & TV Awards on Sunday, in which they sat together and presented Millie Bobby Brown with the Best Actor in a Show award.
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)!
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.