VIDEO : Are Zac Efron And Vanessa Hudgens Back Together Again?

(Photo : Kevin Winter Getty Images Entertainment) After celebrating their two year anniversary of being together, various reports stated that Zec Efron and Sami Miro decided to call it quits on their relationship. Efron is reportedly trying hard to win his ex Vanessa Hudgens back, and has apparently been making secret calls to her. magazine (via Hollywood Life), Efron is making a lot of effort to get his ?High School Musical? co-star back. The magazine reports that Efron?s ?sappy phone calls? to Hudgens are annoying Butler, who thinks Efron is ?using his heartache to try and win her back.?