Kaydene Martin, 40, was busted Sunday and charged with manslaughter and weapon possession for the slaying of Donald Nesbit, with whom she shared three of his four children, ages 2 to 12.

Donald Nesbit was knifed multiple times in the back inside NYCHA’s Roosevelt Houses on Marcus Garvey Blvd. near DeKalb Ave. in Bedford-Stuyvesant at about 5:45 a.m. Saturday, cops said.