text: is itafact that you cant claim a child who lives in your home with his mother and boy friend unless your wed? i wasdoin taxes and told my boyfriend of 2yrs wichwe have livedin the same home together that he could not file on him couse were not married and hes not adopted by him now thats what they said was passed this year ? he can claim the child as a dependent, but if he does, then you cannot. only one person can claim a child as a dependent.