Justin Theroux asks Jennifer Aniston to cut off contact with Brad Pitt
Jennifer Aniston is ready to start a family with fiancé Justin Theroux
Brad Pitt is still a very special person in Jennifer Aniston's life
Brad Pitt and Jennifer Aniston once only had eyes for each other
They last saw each other in person in 2009, after Jen, 43, backed out of this year's Oscars at the 11th hour to avoid a run-in with Ange.
But they've always been in contact, calling and texting each other at least weekly.
Dad of six Brad, who calls Jen 'a dear friend', was even one of the first to text her congratulations when she announced her engagement to Justin Theroux, 41.
However, Justin told her he was uncomfortable with their close friendship and asked Jen to cut contact with Brad.
'Jen feels she owes Justin if she's going to encourage him to have a baby, so she agreed,' says a source.
'She contacted Brad while he was filming in Europe and told him they had to stop calling.'
Jen's pals are glad she's moved on, while Ange, 37, has made it known she doesn't like them being in constant contact, so is likely to be pleased.
However, Jen's sad to lose someone who has been a big part of her life.
'Brad's advice and friendship mean a lot to her,' says the source.
'But she deeply loves Justin and really wants to make him happy - especially as she knows she's asking a lot of him.'
Jen has a demand of her own, though.
She wants Justin to cut off Heidi Bivens, 36, who he dated for 14 years.
Justin was spotted having a friendly lunch with Heidi in New York just days before he proposed to Jen.
'She thinks it's only fair, but she doesn't want to push it,' says the source.