Popsugar Celebrity Alexandra Daddario Are Zac Efron and Alexandra Daddario Dating? Zac Efron and Alexandra Daddario "Aren't Officially Dating," but These Photos May Prove Otherwise 6 April 2018 by Monica Sisavat Solís First Published: 2 April 2018 View On One Page Photo 10 of 11 ADVERTISEMENT () Start Slideshow #tbt Baywatch press. Smile. It's contagious 😀📸credit me. A post shared by Zac Efron (@zacefron) on Sep 28, 2017 at 3:32pm PDT Share This Link Copy ← Use Arrow Keys → 10 Previous Next Start Slideshow Alexandra DaddarioCelebrity FactsCelebrity InstagramsCelebrity CouplesZac Efron