"(Brad) has confided in Jen," the source continued.
"(He knows) Jen just wants to be nice." There has been much speculation over the years about when Pitt's relationship with Jolie began, and whether it started before he officially split from Jennifer.
Pitt admitted during an interview with in May, 2004 - seven months before he and Aniston announced their split.
Pitt started dating Jolie shortly after his divorce from Aniston, but now he and Jolie have split, he has apparently managed to get back in touch with his ex-wife.
, Pitt tracked down Aniston's cell phone number through a "tangled web of contacts" so that he could wish her a happy birthday on February 11.
"They started talking once he wished her a happy birthday," the source added.