Jennifer Aniston has become a loner, it has been claimed.

The 39-year-old actress, who is shooting new movie 'Traveling' in Vancouver,
Canada, rarely socializes with her work colleagues and chooses to spend her
spare time alone.

A source said: "Almost every night when she finishes work, Jen goes back to
her hotel and eats and drinks by herself. Just as often, her evening is a
drink and a book. It's pretty much what she does most nights in Los
Angeles."

Jennifer's only companions back home in Los Angeles appear to be her German
Shepherd dog Dolly and her close friends Courteney Cox Arquette and her
husband David Arquette.

The source added America's OK! magazine: "She goes to fewer restaurants than
she used to. She socializes a lot less than she used to. You never see her
shopping. She doesn't travel except for those vacations with her friends,
the Arquettes."

The former 'Friends' actress is also struggling to move on from her failed
marriage to Brad Pitt - which ended in divorce in 2005 - and still lives in
the couple's Hollywood Hills marital home even though she recently purchased
a new Beverly Hills mansion.