Jennifer Aniston will never marry again. The 40-year-old actress - who recently split from singer John Mayer after a year-long relationship - reportedly thinks she will never find a man she loves as much as her ex-husband Brad Pitt, who she divorced in 2005.

A source told America's OK! magazine: "Ever since Jennifer and Brad split, she has tried desperately to find another man who would win her heart and be the husband she's always dreamed of. But she now realizes that Brad's shoes are impossible to fill."

Jennifer Aniston dumped John Mayer because he wasn't ready to have children. The "Friends" actress and the "Gravity" singer - who had been dating on and off for around a year - ended their relationship last week, with Jennifer's desire to start a family said to be the catalyst for the split.

A source told OK! magazine: "She was truly ready to move on. John wasn't ready to father her child so she ended it."

Jennifer Aniston and John Mayer have split up. The 40-year-old actress was reportedly dumped by her musician boyfriend after she returned from her visit to the U.K. to promote new movie "Marley and Me."

A source said: "They had some disagreements and decided to not continue to see each other. Jennifer is moving on with her life like she always does. She seems happy."

Justin Timberlake says John Mayer is the love child of Macy Gray and a bear. Justin was about to launch into an impression of the "Gravity" singer when he likened John's vocal talents to a cross between Macy and a growling bear.

Appearing on the premiere of talk show "Late Night with Jimmy Fallon," Justin - who is good friends with John - said: "I imitate stars because I love them. How would I describe John Mayer? He sounds like if Macy Gray and Smokey Robinson, or actually, Smokey the Bear had a love child."

John Mayer voted for himself in an online poll asking whether Jennifer Aniston should stay with him.

The 'Gravity' singer - who has been dating the actress for around a year - couldn't resist having his say when he saw a U.S. website asking "Is John Mayer a Keeper?"

Jennifer Aniston insists she wouldn't win movie roles if she ate burgers. The "Marley and Me" actress claims watching her weight is part of her job, adding she knows she is often offered parts because of her slender frame.

She said: "I'm a realist. I know that if I eat nothing but burgers and chips, I'm not going to be hired for the parts I normally would. That might be fine one day, but not right now."