<human>: Can you provide a brief overview of the text?

So my bf and his dad are close. But my bf and his sister hate each other.  Normally on thanksgiving the kids (my bf and his sister) go to their dad's.  But this is the first year me and my bf have our own place together and are inviting at least my family (my mom and step dad) over. So this afternoon while we were visiting his dad I asked if he had any plans for thanksgiving.  He said not anything yet. So I replied "well you are more than welcome to come over to our house". He just smiled and said ok. Now I get a fb msg from him that said my invite was insulting because his kids always come to his house. And that my invite was a way of me saying that the only way he could see his son was to come to our house with people he doesn't know.

When I got the msg I was cuddled up so my bf saw the msg. And then started chewing his dad out via text. Now they are arguing and my bf is thinking about cutting ties with his dad over it. Im devastated. I love my bf but dont wanna be the cause of him losing the only parent that cares for him, and the only member of his family that regularly talks to him... 

I dont know what to do. I cant stop crying right now which is making my bf even more mad. And I dont know How to reply to his dad.
<bot>: my bfs dad took my invite to thanksgiving dinner as an insult. now my bf is thinking about cutting ties with his dad (the only family hes close with)