Bad news, groupies -- Chandler Parsons says he's officially "a one-woman man" ... ending a truly epic run for the NBA's #1 stud.
But Chandler ain't gonna deny he was killin' the game earlier in his career, telling TMZ Sports, "I had a hell of a run."
We got Parsons up in the Bev Hills ... and asked him what it felt like to be the league's hottest bro -- having shacked up with celebs like Bella Thorne, Arianny Celeste, Toni Garrn and (maybe) Hailey Baldwin.