Simon Cowell and fiancee Mezhgan Hussainy break up?

London: Music mogul Simon Cowell had declared that Afghan beauty Mezhghan Hussainy is 'the one', but their relationship has reportedly hit the rocks.

The 51-year-old X Factor judge is currently living alone after Hussainy returned to her LA home saying she needed some "time out" to be with her family, reported Daily Mail online.

The couple, who were originally expected to marry in the summer, but there is still no wedding date and the make-up artiste has told friends that the relationship is on the rocks.

"Mezhgan has said things are not great. She says she never gets any alone time with Simon and that he spends more time with his exes than he does with her," said a source close to the 37-year-old.

Hussainy, who worked as a make-up artist on 'American Idol', believes Simon is "too busy" for their relationship.

"As we understand it, the wedding is not happening at the moment, there is no date. Mezhgan is in LA seeing her family and we don't know if she's coming back," added the source.

"She said he is just too difficult to date and they don't see each other enough. She moved to London to be with Simon and support him when he started The X Factor but she was bored and lonely. She was in his house on her own for much of the time," added the source.