I think the first time around, mania kind of creeped in - everybody got sort of frog-boiled by a set of progressively more weird ideas and behaviours that all built up on eachother so it wasn't totally obvious that it was all nuts, until it got really extreme. Now, though, I like to think I'd see it coming a mile off.
In general, I think trust is the wrong rubric for living with humans. It's better to have faith. In reality, people make horrible decisions and do monstrous things all the time, especially neurotypical people, and if you can only trust people who will not make terrible choices, you should trust no-one. History proves that the vast majority of people, in the right circumstances, will do astonishing and awful things.
It makes more sense to treat it as a moral good in and of itself to trust other people, no matter if they let you down or not. That's the key insight of having faith in the people around you. Maybe they will let you down, maybe they won't, but suffering for an overabundance of faith is a worthwhile kind of suffering.