Chelsea Clinton reportedly split up with her boyfriend Ian Klaus because they didn't get to spend too much time together, People magazine reported Thursday.

Chelsea, 25, the only child of former President Bill Clinton and United States Senator Hillary Rodham Clinton, spent several months in London working on a public health care project while Klaus, 26, was working as a journalist in Iraq and Afghanistan.

A friend of Chelsea told the People magazine: 'They just grew apart.'

Chelsea graduated from Stanford University with a degree in History in 2001, with her undergraduate thesis on her father's mediation of the 1998 Northern Ireland peace agreement.

She then went on to earn a Master's degree at University College, Oxford University in International Relations. In 2003, she joined consulting company McKinsey and Company in New York City, earning a reported six-figure salary, and as of 2005 is based in London.