The most compelling aspect of the sitcom 'Martin' was the relationship between Martin, who was 'played' (if you can call it that) by Martin Lawrence, and Gina, played by Tisha Campbell. The characters were the backbone of the show, and the audience watching spent years convinced that Campbell and Lawrence were genuinely interested in each other. That's until Campbell spoke out - and eventually walked out.
According to Campbell, Lawrence had a romantic interest in her, which she didn't reciprocate. She claims e then tried to force kisses on her, and also touched her inappropriately while filming. Campbell initially refused to kiss Lawrence, but eventually quit the show completely, and the show was canceled as a result. Whatever went on behind the scenes, it seems it's dealt with now - both actors have signed on for the planned reboot of the show.