Simon Cowell and Mezhgan Hussainy

Simon Cowell and fiancée Mezhgan Hussainy are taking a break, Cowell tells the Daily Mirror

"It's quite a complicated relationship," he said. "It's not on, it's not off, it's somewhere in the middle. I don't know if I will ever get married, but I am happy."

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Cowell, 52, met Hussainy in 2003 when she worked as a makeup artist on American Idol. They got engaged in February 2010.

The X Factor judge says he and Hussainy have not seen each other in a month but "are still incredibly close."