Brittany Cartwright and Jax Taylor haven't been "on the same page for a while".
Jax Taylor and Brittany Cartwright have been married since 2019
The 35-year-old reality star announced her split from Jax in February, and she's now explained the reasons behind their separation.
Brittany - who has Cruz, two, with her estranged husband - told E! News: "The truth is, is that we have just been fighting and not on the same page for a while now and it was just becoming a negative space in our own house.
"I just don't want that for our son. I don't want him growing up thinking it's normal to live like that."
Brittany rubbished suggestions that Jax, 44, has been unfaithful.
But she admitted that the couple needed to break-up after they had a "very bad fight".
She said: "Jax did not cheat on me, but we got into a very bad fight and I decided to pack up my stuff and I've been staying in an Airbnb since January 24."
Earlier this month, Jax claimed that "communication issues" led to his split from Brittany.
The TV star also rubbished suggestions that he's been unfaithful to his wife.
He told E! News: "We're just having a little communication issues right now. That's all, there's nothing else.
"There's no cheating. There's no infidelity anywhere. It's just communication. I know it's shocking, but people sometimes just don't get along and that's life."
Jax and Brittany have been trying to maintain a cordial relationship for the sake of their son.
Jax - who has been married to the reality TV star since 2019 - shared: "It's not easy. But it's not affecting our businesses, not affecting raising our child. We're adults. Just because we can't live together doesn't mean we can't work together."