My best friend's dh cheated on her with her sister. She originally left him, and then decided to reconcile. She is now expecting another child with him. I know it is not my life nor is it my place to judge her, but I am so worried for her. Plus, she has put me in the middle several times and complains about him ALL the time. This man has other issues as well. Help me understand why she would come back to him? Would you go back to your DH/DF/SO??