I actually don’t know the answer, I have asked the same questions myself, not about his family (as far as I can tell they are lovely people but not very talkative about emotion themselves). I think if anything his parents were much more lenient with him than his siblings.
I have even gone so far as to ask of he is gay and struggling with it. He just insists that there is absolutely no trauma and no big issue, he just partied too much when he was younger and it crept into home life more and more.
I’m sure he must get upset when alone but it’s certainly not something he would share with anyone.
He said something along the lines of.. ‘No I didn’t but you don’t believe me whatever I say, so believe what you want’. I honestly can’t be sure.
How are you doing? X