With his army of female friends, it's often hard to tell who Simon Cowell is rubbing belly buttons with and who is strictly a platonic pal.

But the music mogul has set tongues wagging after stepping out with 'True Blood' star Janina Gavankar, sparking rumours of a new romance.

janina gavankar

True Blood star Janina Gavankar

The pair were spotted being being driven away together after they enjoyed a meal at Hollywood restaurant Cecconi's.

The night out followed some online flirting between them.

simon cowell

Last month Simon tweeted the actress, writing: "Hello trouble."

She replied "... who me??" with the hashtag #DefinitelyMe, and Simon answered: "Yes you."

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Simon has been linked to F1 driver Jenson Button's former fiancee Louise Griffiths and former 'Baywatch' star Carmen Electra since splitting with fiancée earlier this year.

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