Michael Angarano, the first heart Kristen Stewart broke

Stewart and Angarano in 2008.(Jeffrey Mayer/WireImage)Before Kristen Stewart “devastated” Robert Pattinson’s by cheating on him with her “Snow White and the Huntsman” director, she similarly broke the heart of Michael Angarano, the boyfriend of four years she dropped for her “Twilight” co-star in 2009. The young couple first got together in 2005 when they were teens after they met on the set of the indie drama “Speak” and quickly fell in love. Although they were relatively unknown at the time, the two grew up – and grew their acting careers – together over the years. But their idyllic relationship got its first test in 2008 when Stewart was cast as Bella Swan in “Twilight” opposite the equally brooding heartthrob Robert Pattinson, who she hand-picked as her leading man. Perhaps that’s why Angarano – who played Jack’s son Elliot on “Will & Grace” – was often seen visiting his girlfriend on the film’s Vancouver set.

Once the movie was released in November 2008, reports were rampant that there had been off-screen sparks between the two during filming as well as on its promotional tours, but both Stewart and Pattinson, who was single at the time, chalked it up to fans just wanting to turn them into their romantic characters. "Rob and I are great friends," she told E! Online in March 2009. "But I understand why you would assume that when we lean on each other for support, there must be something more.” Stewart added that even Angarano didn’t think anything of the rumors, saying that they “laugh about it.”

But just one month later, Stewart and Pattinson were back in Vancouver to begin production on the sequel, “New Moon,” and in addition to the on-set flirtations and reports of sleepovers in their hotel rooms, the locals were also getting a front-row seat to the co-stars budding relationship. In onereport, the two were spotted holding hands while grocery shopping, but quickly went their separate ways when they realized people noticed who they were. Angarano wasted no time heading up to Vancouver the very next week and he and Stewart, now 22, were seen holding hands and laughing together – he even gave her a piggyback ride at one point – all over town. But the PDA turned out to be just one final hurrah for Stewart and Angarano because one month later in June, the two split – and Pattinson seamlessly transitioned into the role of her boyfriend.

That is, until this week when Stewart admitted to cheating on him. A day later, on Thursday, Pattinson left their Los Angeles home. Whether or not he plans on returning remains to be seen.