After Zac Efron's relationship with Sami Miro fizzled out, he was linked with co-stars Lily Collins and Alexandra Daddario, but both denied ever dating the "High School Musical" heartthrob. It was also reported that Efron had a fling with singer Mel B after her divorce in 2017 (who wouldn't date a Spice Girl if the opporunity arose?). However, Efron wasn't in another relationship until 2019 when he confirmed that he was dating Olympic swimmer Sarah Bro. But after less than a year together, the pair called it quits after sources say that sparks weren't flying anymore (via Us Weekly). 

But it didn't take long for Efron to get back into the dating game, as he soon started dating actress Halston Sage. The "X-Men" actress and former Disney hunk met in 2014 on the set of "The Neighbors," and were linked during that time. However, they didn't start dating officially until 2019 and kept their relationship quite low key from the public. According to MSN, the relationship was super serious, but they ended up splitting after Efron relocated to Australia.