Despite their 17-year age gap, the two began dating in 2012 after meeting at a party.
Mary-Kate — who was 25 at the time — had reportedly been complaining about "boys not being mature enough for her," and after just one month together, the two were "head over heels" for each other.
Since marrying the 47-year-old half-brother of former French President Nicolas Sarkozy, the 30-year-old fashion designer has been pretty tight-lipped about her romance, only briefly mentioning him once during an interview with The Edit.Sarkozy, 42, who goes by the name 'Oliver', is divorced with two children, while Olsen, 25, previously dated artist Nate Lowman for two years before their split in 2010.By Daily Mail Reporter Mary-Kate Olsen is reportedly dating former French president Nicolas Sarkozy's younger half brother, Olivier.One witness told that they spotted Ashley and the divorced Sachs canoodling."It looked like she was dining with her grandpa, but they were holding hands and snuggling." In November 2016, a source told the site, "Olivier is a longtime friend of Richard's. We don't need so much time to sit and think and ponder," she said of her and Ashley's ambitions.
News of her blossoming love life comes as business also appears to be doing well.