Pete BennettPete BennettBig Brother winner Pete Bennett has revealed the reason behind his break-up with fellow contestant Nikki Grahame.

Brace yourselves, it's rude.

He told heat magazine he ended the short-lived romance because of their sex life:

"She was never really interested, whereas my sex drive is very high!" he gallantly said.

"If I ever tried it on, she would have to finish her make-up or be looking her best."

Pete also said that his ex-Housemate proved to be too high maintenance, commenting: "Her behaviour made me embarrassed."

But Pete does have cause to be red-faced himself.

He confessed he split up with Nikki over the phone: "I didn't know how she'd be," he said.

Pete Bennett and Nikki GrahamePete with Nikki the night he won Big BrotherBlouse.