Meinelt / Winslow / Splash News 1 / 4
Meinelt / Winslow / Splash News 1 / 4

NEW YORK -- Jon Gosselin's post-Kate relationship isn't going too well — and that's according to his new girlfriend.

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Hailey Glassman tells the syndicated television magazine show "The Insider" that the one-time reality TV dad takes out his anger on her. She says he throws "mantrums."

Adds the 22-year-old: "He's like Jekyll and Hyde. But I still love him."

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In a statement to the show, Gosselin says he regretted "any pain that my actions have caused her" and that he was committed to making things right with Glassman, his ex-wife and kids.

Gosselin, who filed for divorce from wife Kate in June, was part of the TLC show "Jon & Kate Plus Eight," chronicling their struggles raising eight children.

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Glassman spoke to "The Insider" in a two-part interview airing Thursday and Friday.