The former power couple shares son Benjamin, 12, and daughter Vivian, 9, while Brady is also dad to 15-year-old son Jack, whom he shares with ex-girlfriend Bridget Moynahan.
The insider also made it clear that their split was “not Tom’s idea,” reiterating: “This was never Tom’s idea.”
Bündchen hinted at trouble in their relationship during an interview published in September, after rumors of their “epic fight” began to circulate, in which she expressed her “concerns” regarding Brady’s “violent” career that has taken him away from their offspring.