So me and this guy started dating and he still likes stuff that his ex posts and she still tries to talk to him and stuff. And he swears that he doesn't want her anymore and he loves me and wants to be with me. And when I asked him to delete her number he wouldn't. I just really don't want to be hurt. He swears that he is loyal and he swears he's not going to leave me for her. I'm just so worried. I need help and advice on what to do and how to make this work without letting my jealousy tear us apart. Please help!!!