blankAlthough Mary-Kate Olsen and her beau Nate Lowman were seen walking together February 4 in New York City, the couple have officially split, a rep for the actress confirmed to PEOPLE. The couple started dating in 2008 after meeting through mutual friends.

The break-up news comes just one week after rumors flooded the Internet that Olsen was spotted at the Weinstein Co. and Universal Pictures post BAFTA party in London last weekend kissing actor Josh Hartnett.