I would really scrutinise his parents relationship, with each other, with other people, with their own children.
No family is perfect.
My ExH, parents were divorced, because he found true love after 37 years of marriage. Good for him, that’s not the problem. The problem is he terrorised his family for 40 years because he was unhappy and everyone tip toed around him. He was THE script and verse.
His mum never said boo to a goose. Enabled ExH to the point it was/is seriously unhealthy.
They never had any friends, but a lot of dinner parties to keep up appearances and appease the Jones’s.
I married him after 7 years of being together. The day after we got married, he slipped into his Dad’s shoes, expecting both me and his mum to put up with it. I didn’t see it at the time, I was rather young, he was pushing 40 by then. Desperately wanted children, him, not me. We had one and then the full extent of what a fuck up I walked in, hit me. His mum would put up with his mood swings and they both expected me to fall in line. He had expectations of me as a mother and wife, but I wasn’t allowed to expect anything of him. Or to question him. Or to expect any support. His mum bless her, really tried to help me, but behind his back.
I brazened it out for 10 more years. I was labelled difficult and foreign, controlling. My family wasn’t welcomed and me visiting them was frowned upon, any friends I might have made were made very uncomfortable and unwelcomed. I did it anyway and that resulted in massive rows.
I wasn’t trying to change him, I was just trying to make sense of it all and marry what I thought were cultural differences.
One day his mother covered for him, again, and that was the last straw. I realised he turned into his father, or rather, he’s always been, so I bailed out, kid in tow.
Now, like his dad, he’s on his own, living a rather miserable small life.
I didn’t learn though, I went on to have another relationship with someone who hated his mother and despised his dad, hated his sisters and was a shit parent to his own child, perpetuating the mistakes his own parents made with him.
Eventually, I got it. I’m pushing 50 😂