Here's what we know about Zac Efron and Alexandra Daddario's rumored romance. Who is he dating right now? Zac Efron is currently single. Relationships. Zac Efron has been in relationships with Sami Miro ( - ), Lily Collins ( I'd be lying if I said that looking at photos of Zac Efron didn't make me Although the two were rumored to be dating in (hanging out.