It all began with Vanessa Hudgens, who played his girlfriend Gabriella in the High School Musical franchise, and Zac also dated the star in real life.
Zac also kissed Nicole Kidman in The Paperboy and Dawyne ‘The Rock’ Johnson in recent summer release, Baywatch.
Zac gives us a hint that he is seeing Rebecca Ferguson who has played Zac's friend in the movie.
Efron's recent posts on social media with Rebecca suggests something is fishy.
Though they get along great both on and off screen, it looks like the two are just friends. Zac Efron manages to show range acting in everything from musicals to comedies to thrillers, like his upcoming turn as serial killer Ted Bundy in got along well with one another.
Zendaya did a good job playing a grumpy teenager in and has also had a hand in musicals and comedies in the past.
Their similar experiences can help the two relate despite a little bit of an age difference.
The High School Musical veteran has just wrapped filming for new movie The Greatest Showman, and during the promotional trail has revealed that locking lips with his co-star Zendaya was pretty darned great.
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I'd be lying if I said that looking at photos of Zac Efron didn't make me sweat. As I've said, these women are as equally stunning as Efron himself, and he's just as lucky to have dated them as they were to have dated him.
It kind of makes sense in a lot of ways as both Efron and Zendaya started out as Disney stars.
According to reports, Zendya had a chemistry test with Zac Efron for director Michael Gracey before the film and apparently, the test went incredibly well!