Sorry, I don't explain things very well. It's hard putting into words what goes on in my head sometimes.
Something like that, yes, but I think his lashing out is his frustration and his lack of control. Katie slept with Robert, and perhaps he never fully got over it. (I know Andy is no angel and cheated on her later but I'm ignoring that for now).
He's tried to move on but it still lurks in the back of his mind. He had no control over her cheating, and his abuse of Jo can be a form of control as she kept it secret. He did tell Katie it was her fault he was abusive when she met him after Jo's departure, remember?
So Bernice, Kerry and Alicia weren't full on as he didn't want to risk his heart and he was in control. But somehow he always goes back to Katie, whether right or wrong, and he's probably never fully gotten over what she did.
But he's probably worrying he could hurt Katie like he's hurt Jo, and ultimately he pushes Katie away. They've always been close; even when she had trouble with her relationship with Declan, she chose to be with him rather than talk to her husband. Remember the punch ups between them?
Back to my original idea. It's true for Andy that he blames Katie for his anger issues and inability to fully trust and relinquish control again. Which is why unless he gets himself sorted I could never see a future for them.
As I have said it's just a thought.![]()