No, it's not that anything that went after should be discounted, it's just that it doesn't necessarily mean what it's commonly taken to mean. Women quite often continue contact with men who have assaulted or raped them, but that would not go over well at trial, because you're "supposed" to immediately cut contact - what sane person would stay in contact with their rapist?? In reality, there are many reasons why it's a bit more complicated than that, not least of which is that the victim might be in a relationship with the accused, as was the case here. It's victim blaming 101 to say, "why didn't you just leave him?" You are "supposed" to be devastated and curled up in a corner crying after an assault, but women often minimise what has happened, pretend it didn't happen, put on a strong face for the world, and so on.
If behaviour before and after is to be included, then why not his behaviour too? How it just happens that he is continually dogged with accusations of assault? Isn't that relevant too?
That's what's so upsetting about this case for many people - it underlines why women don't report assault and rape, because we have so little hope of being believed or a successful prosecution happening.
I do find it incredible that I would have to explain this on a feminist board.