Mary-Kate Olsen is dating Nicolas Sarkozy’s brother Olivier

Former child star Mary-Kate Olsen is reportedly dating Nicolas Sarkozy’s younger half brother, Olivier.

Sources say Mary-Kate Olsen, 25, has been dating the 42-year-old asset manager for a month.

Mary-Kate Olsen and Olivier Sarkozy are “head over heels” for one another and spent Memorial Day weekend together in the Hamptons, the New York Post reported.

Olivier Sarkozy, the managing director for Washington, D.C.-based asset managing firm the Carlyle Group, has previously been married.

After Olivier Sarkozy and his wife Charlotte, who have two children together, had separated, he dated actress Stella Schnabel for a year before their split in March.

He further stirs up the eclectic mix of Mary-Kate Olsen’s boyfriends, who have included artists, actors and shipping heirs.

Mary-Kate Olsen – who shot to fame as a child star with her twin sister Ashley – dated New York artist Nate Lowman for two years before their split in 2010.

She has also hinted at how breaking up with her one-time boyfriend, Greek shipping heir Stavros Niarchos led to her drop out of NYU in 2005.

She has also been linked to shoe designer Seth Campbell and the late actor Heath Ledger before his death in 2008.

News of her blossoming love life comes as business also appears to be doing well. Along with twin sister Ashley, Mary-Kate Olsen was recently listed in a list of the fashion’s top 30 names under 30.

The former child stars, who shot to fame on Full House, made the list thanks to their multimillion dollar clothing empire.

They have worked on a string of fashion labels, and last July debuted their high-end handbag line for The Row at Barneys.

The line includes a croc backpack retailing at a lavish $39,000. They have also been spotted out toting mini handbags, sold at $3,200 apiece.

As well as The Row, which has been worn by Michelle Obama, the women are behind mid-priced labels Elizabeth & James and teen line Olsenboye.

They also created website StyleMint, which recently collaborated with Rachel Bilson.