Ashley: I'll Always Be Close To Zac & Vanessa

The High School Musical franchise has come to an end, and Zac Efron and Vanessa Hudgens recently called it quits. But Ashley Tisdale says she and the former couple will always be the three musketeers.

"We're always there for each other," Tisdale, 25, told PEOPLE of her former castmates Wednesday at the DVD release of her HSM spin-off Sharpay's Fabulous Adventure. "I love being with them. They're so supportive. It's just like a bond. I can't explain it, but they're like a family I've grown up with."

Tisdale says the trio always pick up right where they left off. "We're growing up and we're working on different projects, but we're all super supportive of each other," she says. "They're like my brothers and sisters."

The bond between the three stars, forged beginning with the first HSM in 2006, was evident at Tisdale's Soho House launch party in West Hollywood, where both Efron and Hudgens were all smiles as they came out to support their pal.

Hudgens, 22, rocking a shorter, pinned-up 'do, told PEOPLE she was "feeling great" fresh off a trip to France, where she and her mom "enjoyed eating crepes."

She and Efron, 23, took their turns posing with Tisdale on the carpet, before the three were led to a private area in the back of the venue, where they celebrated with Tisdale's family and other former HSM stars.

Credit: PEOPLE (Dahvi Shira)

Zac Efron, Vanessa Hudgens' "Friendly" Reunion

Zac Efron and Vanessa Hudgens proved that not all Hollywood breakups have to be ugly. On Wednesday, the duo, who ended their five-year romance in December, both came out to show their support for High School Musical pal Ashley Tisdale's DVD release party in West Hollywood.

Although Efron, 23, and Hudgens, 22, arrived separately on the red carpet for Tisdale's Sharpay's Fabulous Adventure launch, it was anything but awkward once the exes were inside.

"Zac and Vanessa definitely seemed comfortable around each other," one observer tells Us Magazine. "They didn't seem affectionate or romantic at all, but they were totally relaxed and friendly."

Seconds another source: "They both came out to support Ashley. They knew they would both be there and were fine with it. They really are still friends."

Hudgens and Efron weren't the only HSM alum to cheer on Tisdale: Lucas Grabeel and Olesya Rulin also attended. "It was like a High School Musical reunion!" says the first observer.

"They were really excited to all see each other," the second source says. "It had been a long time. Everyone, including Zac and Vanessa, stayed late so they could catch up. They had a blast."

Would Tisdale, 25, want to work with her besties again? "I love them so much!" she told Us at the event. "At the time it's obviously a little weird for all of us to be in a movie together because it would remind you of High School Musical, but definitely in a couple years we can definitely do it."

Credit: Us  Magazine