Hold the phone — is Zac Efron off the market?! The High School Musical alum shared a very cryptic snap on his Instagram featuring his Baywatch co-star Alexandra Daddario amid rumors the two are an item. In the snap, the gorgeous actress is cozied up in bed and you can CLEARLY see Zac through the mirror — and to top it all off he captioned the image, “#tbt Baywatch press. Smile. It’s contagious.” This comes on the heels of the 2017 MTV Movie & TV Awards, where the duo seemingly couldn’t keep their hands off each other. WTF?!

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 #SummerandBrody #Baywatch.”

“Everyone is buzzing that Zac Efron and Alexandra Daddario are secretly seeing each other and have been doing so for months,” a source told Hollywood Life. “They had amazing onset chemistry [while filming Baywatch] and have been spending time together since the movie wrapped.”

The insider added, “She thinks he is super sexy, smart, hilarious and loved working with him. He finds her to be an amazing actress and really intelligent. Alex is a New Yorker, which attracts Zac too. He finds her to be sophisticated and more mature than most women. But after a few failed relationships, Zac isn’t rushing into anything.”

Alexandra most definitely added fuel to the fire during a recent interview with the outlet, where she admitted, “I actually did [touch his abs]. The first time early on I had to do a scene where I was with him and I had to touch his waist — I wasn’t prepared and an animalistic shock went through me like this sort of I don’t know, he is like not human. He is something like Michelangelo carved. I have never seen a man like that… It’s incredible.”

Talk about a compliment! What guy wouldn’t want to be with a girl who compares him to a flawless statue?!

Scroll through the gallery to see what the original cast of the ’90s show looks like now!