Jennifer Aniston has got the tabloid media guessing after she has reportedly been sighted with two different men within a matter of days.

The ex-wife of Brad Pitt is said to have celebrated her birthday on February 10 with her other ex, Vince Vaughn.

The "Dodgeball" actor reportedly arrived half an hour after Aniston at a birthday party organized by Courteney Cox. Vaughn stayed for a few hours, partying with guests such as David Spade and Sandra Oh, before leaving ahead of Aniston.

However, the reunion does not mean "The Break Up" co-stars are starting their romance again.

According to the National Enquirer magazine, the former "Friends" star has been getting close to a mystery hunk.

The actress was spotted with an unidentified man at a Sting concert before joining Sting, Trudy Styler and her beau for dinner.

A source said, "Jennifer looked gorgeous in a beautiful gold dress. She was joined by a dark-haired young man, wearing a black and jeans who gently put his arm around her. There was a lot of kissing going on. It was obvious they were more than friends. She was glowing. Romantic music and a sexy man with her - she was loving the evening."

Aniston has been single since splitting with Vaughn.

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