According to the Daily Mail, Butler and Hudgens were first introduced to one another on the set of the very first "High School Musical," in 2005, although Butler did not appear in the film or any of its sequels. He did, however, appear in the spinoff, "Sharpay's Fabulous Adventure."
Hudgens was dating her costar Zac Efron at that time, but sometime in 2010 they split and the following year she and Butler were first romantically linked.
They kept things pretty lowkey during their first few years together, with Butler not making an appearance on Hudgens' Instagram feed until August 2014 when "The Princess Switch" star shared a birthday tribute to the actor and referred to him as "the love of my life."
Appearing at the premiere of his 2019 film "The Dead Don't Die," just months before their reported split, Butler referred to Hudgens as his "rock."
More recently, the actor confirmed that Hudgens was the one to push him to pursue the role of Elvis Presley in the Baz Luhrmann-directed biopic for which he has now received an Oscar and BAFTA nomination, telling The Los Angeles Times: "I owe her a lot for believing in me."
In January 2020, Us Weekly reported that the pair had broken up after nine years together.
The former couple did not respond to Insider's request for comment at the time, but Butler did address the breakup when asked about it in a GQ interview last year. He said: "Life is full of changes, and you've got to find a way to constantly be evolving and growing."