Someone said I've been harsh.
This boy and his mum clearly get on well and his dad, her husband, is miserable to be around, selfish and negative with no room to compromise or enjoy life together.
OP's closing sentence is so sad: "No love in this house atall."
She could have a home filled with love with her and her boy.
My couple of years living with mum after they split (age 16-18) were such a relief. Our home we made was loving and fun and kind and supportive. My friends loved to be around and the home had buzz and personality.
It was tiny but very us. We are still very close and mum explained (when age appropriate) what she wished she had known / felt able to do earlier. It was right for everyone involved but scary as mum was financially dependent. She initially said she stayed together so long "for me" which made me feel sad and guilty. But she explained why, I understood and respected her explaining it to me. She did best she knew how and it was late but not too late!
You could have that life OP. Think how lovely, chilling out with your boy and hearing him laugh with mates!
I adored those years. They were freedom. Sorry if I came across as unfeeling, it was badly worded enthusiasm for parents to please put their child first over a toxic situation. It's so much more damaging than people realise even when it's low level. Because it teaches us what to tolerate and accept as adults - all the wrong things!
Sorry again OP I hope I didn't upset you 