Brad Pitt's oldest son refused to attend the actor's recent monitored visit with his children.
The 52-year-old actor had a supervised meeting with Pax, 12, Zahara, 11, Shiloh, 10, and eight-year-old twins Knox and Vivienne at his Los Angeles home on October 8 - his first since estranged wife Angelina Jolie obtained temporary custody of the brood following her decision to file for divorce last month - but 15-year-old Maddox reportedly didn't attend.
A source said: "He chose not to go and stayed with Angie."
California law states that, as Maddox is over 14, he is able to choose which parent he wants to live with and insiders claim the teenager - who was allegedly involved in a row with Brad, who is said to have "got physical" on a private jet shortly before Angelina filed for divorce - has already made his decision.
One source said: "Maddox is very close with Angie."
Another added: "Maddox never wants to see Brad again."
Maddox was adopted by the 41-year-old actress in 2002 and in 2006, Brad formally adopted him too.
But a source told Us Weekly magazine: "He doesn't really see himself as Brad's son."
All of the children had to undergo a meeting with a therapist before their reunion with Brad, and his eventual time with the kids was "emotional".
A source said: "He wanted to make sure the meeting would be the most productive for the kids."
Another source added: "He and Angie agreed on steps that needed to be completed. He wanted to wait until the timing was best.
"It was emotional for him."
However, the 'Big Short' star's visitation didn't go too well.
The source said: "It wasn't full of joy and happiness."
Despite their acrimonious split and Angelina's decision to seek sole physical custody of the kids, the insider claims the 'Maleficent' star doesn't want to sour the children's view of their father.
The source said: "[Angelina] is not trying to poison the kids against Brad. ... She wants them to have a relationship with him once their health and safety is assured."
However, another source admitted: "No other visitations have been scheduled."