For Robert Pattinson and Kristen Stewart, a perfect date night typically went something like this: a couple of cold beers, an indie band playing onstage, annoying paparazzi nowhere in sight. Taking in a concert by British musician and Pattinson pal Bobby Long at L.A.'s Hotel Cafe on July 19, the couple "were in a great mood," says an observer. "Rob had his arm around Kristen most of the night. They looked very cute. Everything seemed great between them."

Not for long. Just five days later, the three-year romance between Twilight's Stewart, 22, and Pattinson, 26, who reigned as Young Hollywood's golden couple, was shattered by revelations that the ferociously private actress-in a series of mortifying tabloid photos-hooked up with Rupert Sanders, the 41-year-old, married-with-kids British director of Stewart's hit Snow White & the Huntsman. The scandal stunned Pattinson, who had been blissfully unaware of any problems in his carefully guarded relationship-and drove a stake through the heart of "Twihard" romantics (see box, page 68), many of whom lashed out against Stewart with wounded hostility. "Kristen you had everything," tweeted one fan, "girls dream to have your life, your bf, and you...you've just ruined these years!"

While #TeamRob fans vented, the actor himself found a surprising place to hide out: the serene Ojai, Calif., vacation estate of actress Reese Witherspoon, 36, with whom he has remained friends since they appeared together in 2011's Water for Elephants. He's "heartbroken and angry," says a close source, and has been "drowning his sorrows" since the indiscretion exploded into worldwide news.

Stewart, meanwhile, hunkered down too, consumed with guilt and regret over her "huge mistake," a confidante says. She's been leaning on her family for support. "Kristen's sad and upset and desperately wishes she could turn back the clock."