Actors have been hooking up with their co-stars since the dawn of Hollywood. But like other office romances, they don't always have a fairy-tale ending.
With Robert Pattinson and Kristen Stewart calling it quits after nearly four years -- and five movies -- together, join us on a walk down memory lane as we revisit the best (and worst) showmances in recent years …
Rob and Kristen
Nearly a year after surviving KStew's cheating scandal, the duo formerly known as Robsten are reportedly on a much-needed break after clashing over their priorities. "He's been hanging out with the boys a lot, and she's been with her girlfriends. They seem to be living separate lives at the moment,” a source told E!.