Pop Idol star has allegedly been seeing Katie Hall in secret

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Gareth Gates has allegedly been cheating on his wife Suzanne with a female co-star on the touring production of Les Miserables.

The singer is said to have got close to actress Katie Hall, 19, since she joined the show in November.

‘Their intimate dates have been conducted when Gareth is out of town touring or rehearsing,’ a source tells the Mail On Sunday.

Gareth, 25, tied the knot with Suzanne, 34, in July 2008.

They are parents to 10-month-old daughter Missy.

‘We have no comment to make,’ his rep tells Now Online.

Pop Idol runner-up Gareth lost his virginity to Katie Price, 31, in 2002.