John Mayer got his birthday wish on Wednesday night (15Oct08) - ex-girlfriend Jennifer Aniston.
The couple split in August (08) but, amid claims they've reconciled, Aniston helped Mayer celebrate his 31st birthday in Los Angeles.
The actress showed up at members-only restaurant and cigar club the Grand Havana Room and stayed long after midnight to help Mayer ring in his birthday.
An onlooker says, "They seemed to be having a great time."
It was the couple's second outing in Los Angeles this week, following a dinner with friends the night before at the Sunset Towers. Mayer and Aniston are also planning to dine out together again tonight (16Oct08).
Sources tell WENN the couple has booked a table at a top West Hollywood restaurant.