Zac Efron and Vanessa Hudgens' fans were devastated when the High School Musical stars split years ago. When Disney revealed that there will be new cast for the fourth franchise of the musical, the "Zanessa" fans were hopeful to see their favourite couple reunite even just on the big screen.

Disney has already announced that the upcoming High School Musical will star brand new cast members. However, when Efron posted a throwback photo on social media with Hudgens, Ashley Tisdale and Corbin Bleu, fans speculated that he might be back as Troy Bolton.

Efron and Hudgens' split in 2010 was one of messy break up according to Romper. The two High School Musical stars were reported to be avoiding each other since then.

Efron was even rumoured to have missed the 10th anniversary celebration of High School Musical just to avoid Hudgens. But his Instagram post that describes the photo as one of the most cherished and exciting times of his life gives the fan more reason to hope for a "Troyella" reunion.

The caption on the Instagram post last year even read "love you guys forever." That alone could drive Efron and Hudgens' fans into frenzy. Could it be possible that the Baywatch star is hinting on his return to the High School Musical movie?

Without Efron and Hudgens, new characters of the upcoming High School Musical movie are expected according to E! News. Producers are reported to be looking for five new leads to play the roles of a soccer player, a bad boy dancer, a jock or theatre nerd, a cheerleader and a fallen queen.

After the split with Efron, Hudgens have obviously moved on with Austin Butler. Still, fans are hoping that they can see their favourite couple together again on the upcoming High School Musical.