Daddario captioned it, "Backstage shenanigans with @zacefron," and we can imagine she instantly regretted the decision not to be more descriptive. Almost as soon as the actress hit "share," the rumors started flying.
Commenters chimed in with everything from curiosity ("Are you guys dating???
There is a pivotal scene (we're playing it fast and loose with the term here, but just go with it) in which Zac's character, after being rescued from the terrifying ocean waters by Alexandra's character, bops her on the nose and says, "You care about me, and I care about you." That may have been in the script, but it seems as though everyone would sleep better at night pretending that it was improvised by a man in love.
mega babe has certainly come a long way since his Disney Channel days.
I love you both") to overzealousness ("The most attractive couple I've ever seen OMGGGG") to just plain irrational ("THIS IS DISGUSTING LEAVE MY MAN ALONE").