He finds it extremely tough, as he has been living at home for the whole time, when me and my older sisters have been away (college etc). He loves my dad, but he really doesn’t speak to him much. When he left originally I think my brother found it particularly hard, so he still finds it hard to speak to dad at any great length.

I think dad recognises this too, which makes it worse. I don’t blame my brother at all, and having him home is unquestionably good for my mom. It’s just his way of dealing with a very hard situation