Source told Hollywood Life: ‘Zac is still not over Vanessa. His heart is broken & he can’t get over her. He may seem happy on the outside, inside he is hurting. He regrets ever ending his relationship with Vanessa.
Maybe his public flirting with Ashley Tisdale is his way of trying to get Vanessa’s attention. It’s odd because Zac and Ashley are really good friends. They look like they are more than just friends in the photos of them on the beach.’