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'RHOA' Star Drew Sidora Accuses Husband of Cheating & Abuse In New Divorce Filing

Drew Sidora is laying out exactly why she's calling it quits with her estranged husband, Ralph Pittman, accusing him of cheating, abuse and messing with her finances.

In an amended divorce complaint, obtained by TMZ, Drew says she simply cannot take Ralph's "continued blatant disrespect and mental abuse any longer."

She goes on to accuse Ralph of being a serial cheater during their marriage -- even claiming some of the women he's allegedly had affairs with have rubbed it in her face -- sending her screenshots of their "sexts" with Ralph.

That's not all ... Drew also says Ralph has recently gotten physical with her, claiming last month he grabbed her phone out of her hand, causing her to fall to the floor. She says Ralph yelled at her, saying he pays the cell phone bill so the phone belongs to him.

She says when Ralph got physically aggressive, she even considered leaving Atlanta and flying with her 3 minor children to Chicago where they'd feel safe.

She also says at one point, he withdrew a "large sum of money" from her account.

Drew says she and Ralph tried counseling, but it didn't work. In fact, she states after leaving a counseling session, Ralph asked her to give him a "heads up" before filing for divorce and that no matter what happened, he'd let her file first.

Interestingly enough, both Drew and Ralph filed for divorce on the same day -- February 27 -- she beat him by just one hour in filing.

Drew's asking for primary physical and joint legal custody of their 2 kids.

We've reached out to Ralph ... so far, no word back.

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