People magazine reported on his alleged , noting that it took place away from the family's home in the Hamptons.
Though they are still together, they are in the process of separation.
News of their divorce comes after Matt's 2017 after sexual misconduct allegations.
She appears to live in the Hamptons as opposed to New York City, as her two most recent photos are tagged in Sag Harbor and Montauk.
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Sadly, Jackson passed away in 2016, after being diagnosed with cancer.