Brian Austin Green responded to ex-Vanessa Marcil’s comments about their co-parenting situation saying that it’s all a lie.

In a recent Q&A session on her Instagram story, Marcil alleged that after splitting up with Austin: “We didn’t & don’t co-parent. I raised my son alone.” Brian Austin and Vanessa Marcil’s son Kassius is now 20 years old.

Posting a screenshot of the actress’ answer, Austin wrote on Feb. 24, “So, I can’t tell you all how frustrating it is to read continued lies from a 50+ year old woman on social media like she is still in high school. She has never in her life been someone to walk the walk. Talk is cheap.”

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Austin—who also shares three sons with ex-wife Megan Fox, said he was the one who did most of the parenting in their dynamic.

“Megan and I bust our asses to give Kass a well rounded childhood since his mom was rarely there,” he wrote. “I’m assuming that’s why she posts so much of him now. When will she just GO AWAY.”

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Brian and Vanessa, 54, started dating in 1999 after meeting on the set of Beverly Hills, 90210. The two welcomed Kassius in 2002. They split in 2003.

In 2012, Vanessa sued her ex for unpaid loans which were dismissed after a few months as the judge ruled that the statute of limitation has been run out. In 2018, she accused Austin and Megan Fox of completely cutting Kassius out of their lives