High School Musical co-stars Ashley Tisdale and Zac Efron were spotted frolicking on the beach in Malibu this weekend for Ashley's 26th birthday celebration (via contactmusic.com). Ashley, who looked like she was having the time of her life during the festivities, was treated to a shirtless piggy back ride from Zac (swoon) and the pair looked delighted to be in each other's company.  

Ashley, clearly ecstatic with Zac's presence, later tweeted, "So happy zacary made it to my party!!! He's my brother/best friend!!!" (Yes Ash, I'm sure you were also overjoyed to see Zac's buff bod!) Ashley has previously stated that she is still close to all of her HSM family.

But don't start tearing down your Efron posters just yet girls; although she might have not been acting like it, Ashley is actually dating music video director Scott Speer who was also present at the party! (Shouldn’t you have been getting piggy backs from him then Ash?)

And Zac, who recently dished that he still isn't over Vanessa, might have trying to make his ex jealous.

Well you definitely made us jealous Zac, Ashley is one lucky lady!

Compiled by Sarah Silber of the 17 Academy