The first casualty of McIlroy's new celebrity status seems to be his long-time relationship with first love Holly Sweeney. We're not sure where it went wrong for the pair. Sweeney's tweets were full of support during the US Open and in the boozy aftermath following McIlroy's return to Ireland. He's credited Sweeney as a major part of his success. But some time after his fling to Wimbledon and Hamburg for the Haye-Klit fight something went wrong.