Are they on again? Well, maybe. A source said: "He really got to her and she's hooked on him. She just can't let go." The pair were seen in New York about a month ago dining with Courteney Cox Arquette and her husband David. Aniston, 40, is legendary for her romantic turmoil often referred to as "unlucky in love Jen." Mayer and Aniston started their relationship in April 2008 and have split twice since. More Jennifer Aniston:Jen wants to get knocked upWelcome home Jen