I am a divorced mother of three girls who has been living with my boyfriend for almost four years. He supports me and my children, My ex-husband has remarried and him and his new wife get the girls every other weekend and that is all. Can my boyfriend legally claim my children on his taxes since I am unemployed and he claims me as a dependent as well? My ex-husband says he cannot and thinks he is entitled to claim them even though he only pays $480.00 a month in child support and the children live with me and my boyfriend. There is nothing in our divorce papers about who should claim the kids and we have joint custody with me being the custodial parent.