My husband has an 8 year old son from a previous marriage who has lived with us for the last 2 years because his mum decided that she'd rather go out on the p rather than look after her kids. We have always got on really well and he even called me mum sometimes and bought cards that said mum on. When i found out i was pregnant he was so excited and happy and couldn't wait for the baby coming. I had a baby boy which he was so happy about cos he wanted a brother. My son is now 6 months old and things in our house seem to be getting worse. When my son was born he started being really nasty towards me. He went through a phase of trying to teach the baby to call me by my name and not mummy which really upsets me. He doesn't seem to understand that i am my sons mum. I don't know if it's because his mum left him that he expects me to just give birth to and then leave my son too. He is constantly trying to distract my son when he is with me or anyone else on my side of the family. He has also started being really rude and whenever i tell him anything he just sits there and smirks at me. I know he is only 8 but he seems to be putting a wedge between our family. Him and my husband on one side and me and my son on the other. I am at the end of my tether and don't know how to resolve the problems as we lived quite happily together before !!!!!!