London, July 30 : American model Nicky Hilton has ended her four-year relationship with boyfriend David Katzenberg because of work schedule.
"They broke up quietly after four years together. The main reason was that they have been busy with their work schedules, and it has made it difficult to spend time together," contactmusic.com quoted a source as saying.
"Nicky has been back and forth travelling overseas a lot with her business. She has recently been in Asia promoting her jewellery line, and David is starting a new production company. Their schedules never seemed to match,"the source added.
Inspite of the split, the pair is still in touch and treat each other as friends.
"There is no scandal or any third person - they remain close friends, they have been friends since they were teenagers," said the source.
"Nicky has been back and forth travelling overseas a lot with her business. She has recently been in Asia promoting her jewellery line, and David is starting a new production company. Their schedules never seemed to match,"the source added.
Inspite of the split, the pair is still in touch and treat each other as friends.
"There is no scandal or any third person - they remain close friends, they have been friends since they were teenagers," said the source.