Ive just read the whole thread and Id wondered about speaking to a teacher. They will help.
This is really disturbing.
I just keep waiting for the messages to stop, because he has lost it.
He will make out that if you have got an infection that you got it for cheating, he will never admit he gave it to you. It will be the excuse he needs.
He is not a good man, he has obviously been involved with violence against women many many times, and been offered help, and he hasnt taken it. Why? Because it serves him well not to. He will have to give up a great deal to change, and none of it to his benefit. He is a damaged man. Whatever happened to him happened a long long time ago and to even attempt to address it needs YEARS of hard difficult psychological work.
He needs professionals.
Are you a professional?
Are you a highly specialised mental health nurse or psychologist?
Why do you think that you can help him, when the professionals havent been able to do so yet?
There is something missing in you, something that makes you feel responsible for others mental health - something that has made you believe that its your job to fix damaged men to make a happy household? Is this the picture from your childhood? There is some seriously damaging co-dependancy going on here - your thinking patterns and logic are so far removed from normal or healthy that you are damaging yourself and your son by continuing in this dysfunctional and dangerous relationship, trying to fill a man shaped hole with someone who is never ever going to be able to fulfil what you need, because he is probably exactly the kind of person who created the hole in the first place.
The fact he is making threatening sounds about your son will hopefully raise your head above the drowning waters of this awful situation - can you see that he means it. That he has no control of his anger, of his entitlement - that he doesnt see anything wrong in referring to a small boy like that, and why he is considered so dangerous as to be not allowed round children - his words do have actions - violent nasty ones. And if you son were there I have no doubt that he would be the focus of a beating, for what? Because the supposed adult cant find a bit of air filled plastic.
If that doesnt give you the incentive to get him out I really dont know what will.
No doubt he will twist it. put the blame on you.
He needs out. You need to get help because you really are not able to do it yourself, and not safe to. Tell someone and dont go home until that help is there to get him out, get his stuff out and keep him out. But make sure you tell the police and get a safety number / safe room because he is not going to go easy.