They've been broken up for a year now but Zac is not over Vanessa.

HollywoodLife.com reported that Zac is heartbroken and misses Vanessa Hudgens!

“Zac is still not over Vanessa,” the source said. “His heart is broken and he can’t get over her. He may seem happy on the outside, but inside he is hurting. He regrets ever ending his relationship with Vanessa. And seeing Vanessa with Josh Hutcherson just drives him crazy. He wants Vanessa back! 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 certainly look like they are more than just friends in the photos of them on the beach. Let’s face it – Zac is single and hot, maybe Ashley’s true feelings for him are now just coming out!”

So what's the truth? Are Zac and Ash more than friends, or just two good friends messing around on her birthday? Is Zac really still hung up on Vanessa?

Only time will tell..... What do you think of the whole thing?

Source: hollywoodlife