Mary-Kate Olsen has kept her love life private for decades - but that doesn't mean there's been a shortage of men in her orbit. Mary-Kate and her twin sister, Ashley Olsen, rose to fame in 1987 when they both played Michelle Tanner on Full House. The sisters' careers soared thanks to their direct-to-video films made under their production company, Dualstar Entertainment Group's umbrella. They later left Hollywood to become fashion designers and live in New York City. As their fame increased, Mary-Kate and Ashley's love lives became just as well-followed as their careers.