Jim would never let other men near Ro Xin. He had a strong desire to possess Ro Xin to the point that he would feel annoyed when she got too close to her brother, Ro Li. He already viewed Ro Xin as his woman. Firstly, he really liked her. Secondly, if he and Ro Xin got married, the Boride family would righteously take over the Ro Drifter Camp.
Other than that, the Boride family and the other three had agreed to stop the camp from accepting new Drifters, at least before they completely take over the rule from the Ros. It could not be helped because all the individual groups supported the Ros who easily won the hearts of the people with their style. Plus, being a herbal healer, Ro Xin was very popular among the people because she was a much-needed healer in the camp.