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1. REAL OR REEL ROMANCE?
Love at first bite? Twilight director Catherine Hardwicke auditions Robert Pattinson and Kristen Stewart for the coveted roles of star-crossed lovers Edward Cullen and Bella Swan. They "did some scenes on my bed" and "had the chemistry," Hardwicke recalls of their professional meeting. Rumors of an off-screen relationship between the franchise's main stars earn as much hype as the saga itself after an observer spots them kissing and "acting like a girlfriend and boyfriend."
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2. PLAYING IT COOL
Even the Twilight set chatters about Stewart and Pattinson "hooking up," a source tells PEOPLE before New Moon debuts in November 2009. But the budding couple plays coy. "It doesn't make any difference what you say [to tabloids]," Pattinson tells Vanity Fair in November. "I've literally been across the country [from Kristen], and it's like, 'Oh, they were on secret dates!' It's like, 'Where? I can't get out of my hotel room!' "
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3. KISSING, BUT STILL NOT TELLING
But Stewart and Pattinson's lips ultimately do all of the talking – when they're caught kissing on a Montreal street corner in August 2010, just months after ringing in the new year together. "They are a couple in love," a source tells PEOPLE, and the fang-tastic photographic proof trickles in over the next two years of their relationship as they pack on the P.D.A.
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4. NOTES ON A CHEATING SCANDAL
Sources tell PEOPLE in July that Stewart hooked up with her Snow White and the Huntsman director, Rupert Sanders. The actress apologizes to Pattinson via statement, saying, "I love him, I love him, I'm so sorry." They move out of the home they shared together, with the only reunion planned being a contractual one to promote the vampire smash's final film.
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Julia Roberts Presents Jess Cagle with the GLSEN Visionary Award