Famous co-stars end up becoming Hollywood couples all the time, and some celebrities have taken their on-set romances off the set over and over again. Pretending to fall in love apparently leads to real life dating for plenty of actors and actresses. Are TV and film sets hotbeds of flirtation, romance, and "true" love? These celebrities make us wonder, because all the stars on this list have reportedly been romantically linked to their co-stars in multiple projects.
What is it about filming a movie, TV show, or even a music video that draws aco-stars together? Is it the perfect lighting? The amazing clothes? The appeal of being on camera? The craft of acting? The fact that they're going to be stuck together for months doing press anyways? Maybe it's just the fact that everyone onscreen is darn attractive. Whatever it is, these celebs have proven they can't keep their hands off their co-stars. Or at least the rumors claim as much.We all know of The Notebook inspired romance between Rachel McAdams and Ryan Gosling, that Jennifer Garner and Ben Affleck married after filming Daredevil, and that Emma Stone and Andrew Garfield first started dating on The Amazing Spider-Man. But those weren't even the only real romances that were sparked during production for any of those actresses. Want to know who else they dated... and then dated after that? Check out our list of celebrities who frequently date their co-stars and ponder the mysteries of Hollywood chemistry.