Well, that escalated quickly!

NeNe Leakes planned a "Pillow Talk" party for the ladies and their significant others on Sunday's "Real Housewives of Atlanta" ... but the party quickly shifted from fun to fighting after Kenya Moore showed up an hour late.

Check out the video above to see what happens when Natalie Williams' husband Christopher calls out Kenya for labeling their marriage as "common law."  

The get-together was supposed to be a time for couples to answer some simple questions, as sort of a couples counseling session.

But when random "How well do you know your mate?" questions were asked, the ladies and their men definitely seemed on edge. 

Last week, Kenya said that Natalie's husband would regularly refer to his wife as his "girlfriend" or "common law partner" ... and Christopher definitely wanted to clear the air.

"I don't know what medication you're on …" he said to Moore. Kenya then gets in his face and all hell breaks loose.  

Moore's friend Brandon DeShazer tries to come to her defense, but he ends up getting into a fight with Christopher and Phaedra Parks' husband Apollo Nida

Who do you think was in the wrong? Tell toofab in the comment section below!

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