Careful here. What little I know, Ron's parents are not to blame. He was raised by good people and he knows better than to behave the way he does.
There is just something missing. You can see it in any situation where things don't go his way. He does not care even a little about the well being of the people around him. His displays of "concern" are designed to give the right impression and create a certain image, and at the end of it all, his only true concern is what he is going to get out of it.
On his birthday last year I did some research and found a bakery in Jax with the best coconut cake because that is his favorite. I lit candles when he came home from work, and sang him happy birthday. With tears in his eyes he told me no one had ever done anything so nice for him (which is likely untrue). What I'm able to piece together now, he was sleeping with at least one other woman at that time. He could stand there and tell me that I was his world, and that he would do anything to keep me safe for the rest of his life, knowing all the time he is saying it that he doesn't mean a word of it. But he got what he wanted from me, and that was all that mattered.
He conned me into giving him every part of myself and letting him into the circle of my life that includes my kids. They trusted him too. I'm not sure if he's a sociopath or some other thing, but whatever it is, it destroys people, and I hope every person he tries to do it to in the future sees him for what he is and dodges the bullet that I did not see coming.