Hi, First time poster on here. So I’m a man, met a girl about a year ago and we became pregnant way earlier then we had planned. Unexpected by both but taken as a blessing and both positive about it. We have our ups and downs as any couple would but generally good. She has a 10 year old son, me and him get along well and did pretty much from the start. I have spent time with him, bought him bits and pieces, driven him to/from school, tried to teach him things, explained respect to him, emphasised how amazing his mum is to him/us - basically did all the things I would do if he were my own blood son. She says he has anger/emotional issues and he does seem to go from 0 to 100mph rage in a split second over the smallest thing (ie: if we make a joke he doesn’t like or even mimic a noise he makes). He will scream, shout, bang doors and generally be horrible to be around. He is an only child and his mum has been a single parent pretty much since his birth (which I respect and salute totally). My issue is he talks to her (his mum) like dirt, he screams at her, shouts, is rude. Even if she asks for a small task to be done he will be nasty and horrible about it. I know kids can be resistant to tasks but he will make it WW3 and totally over react to any request. When she asks even a small thing he will ignore her or moan so much she gives in and he basically does what he does/doesn’t want to do. He has zero manners, he will never say please or thanks and never shares anything he has. But feels anyone else should share or he is being cheated/left out. He is horrible to/about other kids and says mean things about them and acts nastily to them. For me, being 10 he should be nicer to other kids especially if they are 3-4 years old? The other day he literally went crazy just because his 3 year old cousin took one of his many free from McDonald’s balloons. The most frustrating part for me is his Mum doesn’t think his behaviour is a problem or an issue. So in turn he doesn’t get called out of reprimanded and he can act this way and thinks it’s ok. It makes me want to scold and discipline him but his mum has asked me not to discipline him. So I bite my tongue and try not to listen or get involved. But when I hear/see him being so disrespectful to his own Mum. I fear for how he will be when he’s a teenager. For me he hasn’t got any emotional issues he just hasn’t had any discipline or boundaries set. It would be easier to walk away and leave the situation, but as mentioned we have had a baby just a week ago. Even the night before labour her 10 year old son was telling his mother he hates her and being horrid to her just because he wasn’t allowed to his friends house to play (his mum did explain it’s because baby due any moment). I don’t feel unreasonable, ok I’m not a previous parent but my career means I’ve worked closed with children previously and I come from a big family. My fear is our new born daughter will see her old brothers behaviour and mimic it. It saddens me a 10 year old can talk about his own mother and act so mean to her but as mentioned the most frustrating bit is his mother acts like his behaviour is fine. So it’s not even addressed or highlighted/worked on. So it makes me look like I’m over sensitive or overly strict. I was raised to love your mother endlessly and respect everyone (especially your elders). Am I living in the 1950’s or am I missing something? Any opinions much appreciated. Please be as brutal/harsh as you feel as this is my last hope to get any further insight.