British pop star Cheryl Cole has reportedly split from her U.S. dancer beau. The former Girls Aloud star decided to end her 14-month romance with Tre Holloway due to the pressure of maintaining a long-distance relationship. A source tells Britain's The Sun, "Cheryl and Tre have tried to make it work but the long-distance relationship and work commitments got the better of them." The publication claims the pair split over the summer (13), but have maintained a close friendship. Holloway turned out to celebrate Cole's 30th birthday in Las Vegas in June (13) and they were spotted enjoying a meal together in London last month (Sep13). Cole was previously married to English soccer star Ashley Cole and has also dated U.S. professional dancer Derek Hough.