ok, so i have this friend that is part of my group. He can be cool at times, however when it comes to women he is a jackass. he uses them imediatley and does not want to get to know them, just use them and move on. he makes girls feel sorry for him and then they feel bad and do stuff. Just recently he started using this girl, he depruded her so shes obcessed with him, and hes been doing a lot of stuff with her, and saying to people he hates her and would never do stuff with her, however he invites her to his house for half hours just to use her. i want to tell her but im not sure if i should. what sould i do?