Im a step mother to my husband 2 kids (1 boy and 1 girl) and i have 2 biological kids (1 boy and 1 girl) of my own from my previous relationship. We move in together and his son spend one week with us and one week with his mom . But when he is with his mom she always find a excuse to drop him off in our house. Now we have his daugher with us because the mother is going thru a rough time which was cause by her own decisions. My kids live with me, i take care of his kids like my own and im always on top of what they need in general. since we been together he has not gone to the store to buy his kids nor mine nothing because im always one step ahead it could be clothes, toys, or things they need for school. but my problem is that his kids mother have no bounderies nor limits. the kids mother is always trying to run our house and im tire of fighting and arguing with him but he always give into what they said because asper him its not my business nor concern. he rather fight with me to keep them happy.he alway find a excuse and justification to why they are how they are. Can i get some advice or way to tell my husdand that his only responsability is his kids and not the babymothers.we are not walmart, bank of america nor good will to resolve every problem they have. But when we have an issue we have to resolve it ourself. Im to the point of ending this relationship because i rather be alone than with a man that but his past relationship 1st that his current one.