Mary-Kate Olsen is eager to start a family.
The 27-year-old fashion designer, who sparked speculation she isengaged after she was spotted checking out rings at the Neil Laneboutique in Los Angeles several times last month, reportedlywants to have a baby with her 44-year-old beau Olivier Sarkozy,whom she has been dating since May 2012.
A source told Us Weekly magazine: "She'd like to get pregnant butisn't so sure about marriage."
The French banker already has two children, Julien, 12, andMargot, 10, with his ex-wife Charlotte Sarkozy, and Mary-Kate hashelped him form a closer bond with them.
The insider said: "Mary-Kate has made him a better father. Sheremembers all the kids' special events. She thinks he's a greatdad."
The couple began living together in a $6.25 million townhouse inNew York City after just three months together.
Mary-Kate previously dated artist Nate Lowman for over two years before splitting in 2010, whileOlivier, who is half-brother is Nicolas Sarkozy, former president of France, romanced actressStella Schnabel for a year before their break-up last March.
He divorced his ex-wife in 2011.