Labug,
Been thinking about your point:

It's none of my business what others think of me.

This is a hard one for me to take on. I get it. It's not possible to control others. They will form their own opinions no matter what.

But.. but... I've been around long enough to know that there are some real operators out there - and some people are adept at manipulating others to their own ends. This often involves recruiting others to their point of view.

I'm starting to sound paranoid, I know... but stbx has recently successfully alienated his parents from me and the kids.
He accused me of 'sucking up' to them because we still saw each other, particularly on birthdays and christmas. He wasn't there and he resented it.
Then came his campaign of: She is poisoning the kids against me. She won't let me see the children. She won't let me bring the kids to see you.

Whether they swallowed it completely or just decided to pull back to avoid the fight, I don't know. But the outcome for me and the kids is no contact with them and no financial help or food coming our way any more. They don't even know that he's stopped CS. His campaign of disinformation coincided with stopping payments. Imagine that...

So, this is where I'm coming from in having difficulty accepting that "It's none of my business what others think of me".

I know 'the truth' will probably come out in the end but, in the meantime, I feel like I need to be seen to be 'doing the right thing' or else I just play into his game.