However Olsen does not seem to be too devastated by the break-up because she was spotted kissing actor Josh Hartnett last week at Weinstein Co. and Universal Pictures post BAFTA party in London.
"They were making out in a dark corridor of the party," a source told People. "Everyone danced all night." Olsen's rep denied that the two were kissing.
Whether or not she kissed Hartnett, she is not sitting around crying about the split because she was seen with sister Ashley attending shows at London Fashion Week.