Haven't posted on any previous threads as tend to watch them the day after and want to avoid spoilers, but thought the ending was BRILLIANT!
The way that you started to feel like oh wait, TLR really does love Ryan, doesn't he? And then realise that means absolutely nothing, because although he says he loves him and wants to spend time with him and decides not to destroy his house, he still doesn't recognise that he has hurt Ryan by causing the trauma that he did to his mum, he doesn't recognise that he has made Catherine's life and job more difficult, he just reverts back to "this bitch took Ryan away from me, well, I guess I forgive her for that, since she's taken good care of him." He only sees people in terms of himself. He doesn't recognise that it would be terrifying and dangerous for Ryan to be taken on the run either, it's just an opportunity to spend time together to him. It's such an emotionally immature definition of love, almost like a little child.
Incredible to see on screen for me, because (going back a good few years now) DS1's dad and I had a really unhealthy, abusive relationship and I kept getting pulled back in because he'd say "I love you [both], I want us to be a family" and that was what I wanted too, until I started to look at what he did, not just what he said and realised that he might well totally and utterly believe that, but he didn't have the same definition/understanding of what it meant to love somebody, what it meant to be a family, that I did and so in fact, no matter what he said it would never ever ever work. That allowed me to emotionally disentangle and then I left. But I've never seen this illustrated ever before.
Also the moment where Catherine realised that Ryan definitively is not like his dad. I think she'd been holding onto that bottled up fear for 16 years and never voiced it to anybody, not even herself. That is possibly why she is sometimes harsh with him in what comes across as an unfair way. I've seen it on MN parenting threads, I had a bit of it myself. Every time DS1 acted in any way like his father, I would jump to this huge fear that he was going to grow up and be like him. In fact DS1 was not acting like his father, he was acting like a child. He grew out of it, my ex (as far as I know) never did. It's a horrible fear and so taboo people don't speak about it.