"From time to time, she even pulls out a box of mementos she's kept - love letters, her handwritten wedding vows, pictures from their romantic vacations abroad, even one of Brad's old, ratty T-shirts that she claims still has his smell on it," showbizspy.com quoted a source as saying.
Aniston, who is engaged to actor Justin Theroux, is so consumed by thoughts of Pitt that she recently enlisted friend and actress Courteney Cox to spy on him by way of their mutual friend David Fincher.
"Jen's always encouraging Courteney to set up dinner dates with David so she can pump him for updates," a source said.
"She tells Courteney she is only interested in knowing what Brad and Angelina's wedding plans are, so that they don't conflict with her own. But Courteney knows her interest runs deeper," added the source.
The source even said that Theroux, "would hit the roof if he knew how much Jen still pines over him (Pitt)... she is beginning to think it could wreck their relationship, so she has gone back into one-on-one counseling - she really wants to dig the old skeletons out of her closet so she can be emotionally unburdened before she walks down the aisle with Justin.
"Jen realises that it's high time she let go of her unhealthy attachment to Brad. He has obviously moved on with his life - and the truth is, Jen's very happy with Justin too. But Brad is like some kind of a ghost who constantly haunts her."
