Cameron Diaz is reportedly dating a new mystery man.

The 40-year-old blonde beauty enjoyed a cosy dinner with "a dapper gentleman dressed in a suit" at Bill's Food and Drink in Manhattan, according to the New York Post's Page Six.

A source said the couples appeared to be having a great time together and it didn't look like a first date, although Cameron introduced her guest to Drew, who gave birth to her first child Olive last October.

The insider said: "Drew was raving about her baby and the best friends appeared to be having a great time."

Cameron was recently said to have been advised by her other best friend Gwyneth Paltrow to give up men because her romantic liaisons "distract her".

A source previously said: "Gwyneth's sorted out everything from finances to hooking her up with her trainer. She has also forced her to swear off sex for a year, saying men distract her focus."

The two friends have been spotted out together regularly in the past year - after having became close after the death of Gwyneth's TV producer father Bruce Paltrow in October 2002 - and Gwyneth, 40, previously hoped to find the perfect man for her bubbly pal.

A source explained: "Gwyneth is a nurturer. Cameron is bummed about being single, so Gwyneth sees her as a project. She's trying to set her up with guys!"

Cameron has previously dated several famous men, including Justin Timberlake, baseball player Alex Rodriguez and Jared Leto.