What another woman calls her SO. Boyfriend/Fiance/Husband? They are all just titles. Get so sick of seeing, theres no ring, he's not your husband. There's no stupid paper..he's not your husband. Who freaking cares. They are to a point in their relationship they feel they can call eachother that..So be it. What harm is it doing to you. Hell thing my SO (and no not legal husband) and I have a better relationship then most the "legally" married people we know.