Zac Efron Officially Dating 'Neighbors' Co-Star Halston Sage: Will she Help him Get Over his Alleged Drug Use?
![Seth Rogen & Dave Franco: 'Neighbors' Premiere with Halston Sage!: Photo 3101180 | Christopher Mintz-Plasse, Dave Franco, Halston Sage, Lauren Miller, Seth Rogen Pictures | Just Jared Seth Rogen & Dave Franco: 'Neighbors' Premiere with Halston Sage!: Photo 3101180 | Christopher Mintz-Plasse, Dave Franco, Halston Sage, Lauren Miller, Seth Rogen Pictures | Just Jared](https://cdn.justjared.com/wp-content/uploads/2014/04/rogen-neigh/seth-rogen-dave-franco-neighbors-premiere-with-halston-sage-31.jpg)
Seth Rogen & Dave Franco: 'Neighbors' Premiere with Halston Sage!: Photo 3101180 | Christopher Mintz-Plasse, Dave Franco, Halston Sage, Lauren Miller, Seth Rogen Pictures | Just Jared
![Cast member Halston Sage attends the premiere of the motion picture comedy " Neighbors" at the Regency Village Theatre in the Westwood section of Los Angeles on April 28, 2014. Storyline: A couple Cast member Halston Sage attends the premiere of the motion picture comedy " Neighbors" at the Regency Village Theatre in the Westwood section of Los Angeles on April 28, 2014. Storyline: A couple](https://c8.alamy.com/comp/TY4KWA/cast-member-halston-sage-attends-the-premiere-of-the-motion-picture-comedy-neighbors-at-the-regency-village-theatre-in-the-westwood-section-of-los-angeles-on-april-28-2014-storyline-a-couple-with-a-newborn-baby-face-unexpected-difficulties-after-they-are-forced-to-live-next-to-a-fraternity-house-upijim-ruymen-TY4KWA.jpg)
Cast member Halston Sage attends the premiere of the motion picture comedy " Neighbors" at the Regency Village Theatre in the Westwood section of Los Angeles on April 28, 2014. Storyline: A couple
![Seth Rogen & Dave Franco: 'Neighbors' Premiere with Halston Sage!: Photo 3101163 | Christopher Mintz-Plasse, Dave Franco, Halston Sage, Lauren Miller, Seth Rogen Pictures | Just Jared Seth Rogen & Dave Franco: 'Neighbors' Premiere with Halston Sage!: Photo 3101163 | Christopher Mintz-Plasse, Dave Franco, Halston Sage, Lauren Miller, Seth Rogen Pictures | Just Jared](https://cdn.justjared.com/wp-content/uploads/2014/04/rogen-neigh/seth-rogen-dave-franco-neighbors-premiere-with-halston-sage-14.jpg)
Seth Rogen & Dave Franco: 'Neighbors' Premiere with Halston Sage!: Photo 3101163 | Christopher Mintz-Plasse, Dave Franco, Halston Sage, Lauren Miller, Seth Rogen Pictures | Just Jared
![Zac Efron 'dating Halston Sage': Hollywood hunk and his Bad Neighbours co-star met on the set of their new film - Mirror Online Zac Efron 'dating Halston Sage': Hollywood hunk and his Bad Neighbours co-star met on the set of their new film - Mirror Online](https://i2-prod.mirror.co.uk/incoming/article3378536.ece/ALTERNATES/s1200c/CS59620530LOS-ANGELES-CA-.jpg)