I currently live with my ex and our 3 kids (16, 14 & 11). It became apparent soon after baby 2 came along that he's autistic and struggles massively with the hustle and bustle of having life. He's been a crap dad, very uninvolved, comes across as very mean, but I've always excused it as he can't help being autistic. I've lived that life for years now and we split up four years ago. The kids have also lived that life for years. It's their normal. I'm basically a single parent and they know I do everything for them. They do have some sort of relationship with him, but it's very sporadic. He does nothing with them apart from maybe taking one or two of them to KFC a couple of times a year.
However, over the last few years he's become an alcoholic. He's always enjoyed a drink and it didn't bother me too much but now he's drinking at least 250 units a week, every week.
I had always decided to stay with him to avoid breaking up the family home and was aiming to do that until the kids have moved on (so potentially another ten years), but his drinking is making him become nastier and nastier and I genuinely don't think I can put up with it for much longer. I'm beginning to actually hate him.
So, my question is this : how much do I tell the kids? I really struggle to weigh up the pros and cons of keeping as much of it as possible from them as they're kids and don't need to know all the details of our relationship or that I think he's an arsehole / them needing to know the truth of what I actually have to live with and why I'm contemplating breaking up the family home?
I'd really appreciate your opinions to help me try to come to a balanced decision!
Thanks all x