Rihanna, Lewis Hamilton said to be enjoying a series of 'secret dates'

Singer Rihanna and Formula One racing driver Lewis Hamilton are reportedly dating.

The two have apparently enjoyed a series of secret dates this year, including a night out last weekend.

A source close to Rihanna told The Sun: "They've had a flirtation for years and have always fancied each other, but since May they've been talking a lot. Finally their schedules allowed them to spend a weekend in the same part of the world, and they made the most of it.

"They are both really busy but Rihanna has asked him to come to Rock in Rio in September, so he can see her perform and spend time together."

The report claims the pair grew closer at the Met Gala earlier this year when Hamilton, who was earlier dating singer Nicole Scherzinger, sat with Rihanna at the after party.

The source said: "He is a bit infatuated with her and thinks she is not only sexy but incredibly funny, although he knows she has a reputation as a heartbreaker."