Photo: Ben Mark Holzberg/Disney Channel via GettyAshley Tisdaleis celebrating longtime friendAustin Butleras he hits the big 3-0!Tisdale, 36, commemorated the pair’s years-long friendship onInstagramTuesday as she celebrated Butler’s milestone birthday.“Wow @austinbutler I can’t believe your [sic] 30!!! Welcome to the club buddy,” the formerHigh School Musicalstar wrote alongside a slew of photos of the duo from over the years. “You’ve been my best friend since you were 15 so that’s 15 years strong of friendship! I am beyond proud of you and everything you’re accomplishing but most importantly proud of the person you are.“She continued, “You’ve been my closest friend through the years. You’re the type of friend that came over when I was crying on the floor from a horrible breakup and not only lifted me off the ground but brought my favorite candy. I honestly didn’t think anyone would ever understand me like you but then enter my husband [Christopher French] and you happily embraced him like a brother. There’s no one like you Austin.“Tisdale also called theOnce Upon a Time in Hollywoodactor her “twin born 7 years later.““I can imagine your mom is beaming of joy watching everything you do and is with you every step of the way,” she said of Butler’s mother Lori, whodied from cancerin 2014. “I hope you know how loved you are! Happy Birthday. PS remember that one time I convinced you to be in my Disney movieSharpay’s Fabulous Adventure? Well look at you now!!“In addition to starring inSharpay’s Fabulous Adventuretogether in 2011, Tisdale and Butler also co-starred inAliens in the Atticin 2009. Butler was also previously in a long-term relationship with Tisdale’s best friendVanessa Hudgens.PEOPLE confirmed in January 2020 that Butler and Hudgens, 32,had called it quitsafter more than eight years together. The exes, who began dating in 2011, hadbeen in a long-distance relationshipover the years due to their respective filming schedules.Never miss a story — sign up forPEOPLE’s free daily newsletterto stay up-to-date on the best of what PEOPLE has to offer, from juicy celebrity news to compelling human interest stories.Hudgens has since moved on with Pittsburgh Pirates playerCole Tucker.Butler, meanwhile, has recently sparked dating rumors withLily-Rose Depp. The pair werephotographed sharing a steamy kissfollowing a dinner date in London.

Photo: Ben Mark Holzberg/Disney Channel via Getty

Ashley Tisdale , austin butler

Ashley Tisdaleis celebrating longtime friendAustin Butleras he hits the big 3-0!Tisdale, 36, commemorated the pair’s years-long friendship onInstagramTuesday as she celebrated Butler’s milestone birthday.“Wow @austinbutler I can’t believe your [sic] 30!!! Welcome to the club buddy,” the formerHigh School Musicalstar wrote alongside a slew of photos of the duo from over the years. “You’ve been my best friend since you were 15 so that’s 15 years strong of friendship! I am beyond proud of you and everything you’re accomplishing but most importantly proud of the person you are.“She continued, “You’ve been my closest friend through the years. You’re the type of friend that came over when I was crying on the floor from a horrible breakup and not only lifted me off the ground but brought my favorite candy. I honestly didn’t think anyone would ever understand me like you but then enter my husband [Christopher French] and you happily embraced him like a brother. There’s no one like you Austin.“Tisdale also called theOnce Upon a Time in Hollywoodactor her “twin born 7 years later.““I can imagine your mom is beaming of joy watching everything you do and is with you every step of the way,” she said of Butler’s mother Lori, whodied from cancerin 2014. “I hope you know how loved you are! Happy Birthday. PS remember that one time I convinced you to be in my Disney movieSharpay’s Fabulous Adventure? Well look at you now!!“In addition to starring inSharpay’s Fabulous Adventuretogether in 2011, Tisdale and Butler also co-starred inAliens in the Atticin 2009. Butler was also previously in a long-term relationship with Tisdale’s best friendVanessa Hudgens.PEOPLE confirmed in January 2020 that Butler and Hudgens, 32,had called it quitsafter more than eight years together. The exes, who began dating in 2011, hadbeen in a long-distance relationshipover the years due to their respective filming schedules.Never miss a story — sign up forPEOPLE’s free daily newsletterto stay up-to-date on the best of what PEOPLE has to offer, from juicy celebrity news to compelling human interest stories.Hudgens has since moved on with Pittsburgh Pirates playerCole Tucker.Butler, meanwhile, has recently sparked dating rumors withLily-Rose Depp. The pair werephotographed sharing a steamy kissfollowing a dinner date in London.

Ashley Tisdaleis celebrating longtime friendAustin Butleras he hits the big 3-0!

Tisdale, 36, commemorated the pair’s years-long friendship onInstagramTuesday as she celebrated Butler’s milestone birthday.

“Wow @austinbutler I can’t believe your [sic] 30!!! Welcome to the club buddy,” the formerHigh School Musicalstar wrote alongside a slew of photos of the duo from over the years. “You’ve been my best friend since you were 15 so that’s 15 years strong of friendship! I am beyond proud of you and everything you’re accomplishing but most importantly proud of the person you are.”

She continued, “You’ve been my closest friend through the years. You’re the type of friend that came over when I was crying on the floor from a horrible breakup and not only lifted me off the ground but brought my favorite candy. I honestly didn’t think anyone would ever understand me like you but then enter my husband [Christopher French] and you happily embraced him like a brother. There’s no one like you Austin.”

Tisdale also called theOnce Upon a Time in Hollywoodactor her “twin born 7 years later.”

“I can imagine your mom is beaming of joy watching everything you do and is with you every step of the way,” she said of Butler’s mother Lori, whodied from cancerin 2014. “I hope you know how loved you are! Happy Birthday. PS remember that one time I convinced you to be in my Disney movieSharpay’s Fabulous Adventure? Well look at you now!!”

In addition to starring inSharpay’s Fabulous Adventuretogether in 2011, Tisdale and Butler also co-starred inAliens in the Atticin 2009. Butler was also previously in a long-term relationship with Tisdale’s best friendVanessa Hudgens.

PEOPLE confirmed in January 2020 that Butler and Hudgens, 32,had called it quitsafter more than eight years together. The exes, who began dating in 2011, hadbeen in a long-distance relationshipover the years due to their respective filming schedules.

Never miss a story — sign up forPEOPLE’s free daily newsletterto stay up-to-date on the best of what PEOPLE has to offer, from juicy celebrity news to compelling human interest stories.

Hudgens has since moved on with Pittsburgh Pirates playerCole Tucker.

Butler, meanwhile, has recently sparked dating rumors withLily-Rose Depp. The pair werephotographed sharing a steamy kissfollowing a dinner date in London.

source: people.com