Opening up about abusive ex

I’ve only ever told one friend about what my ex was truly like. My current partner knows it was a highly toxic, abusive relationship, but I haven’t been able to be open about any details.

While I was with my ex, it was almost like Stockholm Syndrome, over 6 years he gradually worsened and because I was with him since 14, I didn’t know any different and I made excuses so he wouldn’t get angry or feel bad for his behaviour. Because I loved him and didn’t want him being hard on himself. It wasn’t till I left that I realised how disgusting his treatment of me was and how badly he let his group of friends treat me.

I want to be able to talk to just anyone about it, and I’m about to start seeing a psychologist for the management of my bipolar, so I was planning to talk to them. But is it possible for them to make a report about it if that’s not what I want? I really, really don’t want to take any legal action about it. It was a year ago that I left him and he’s moved on to a new relationship as have I. I don’t want to open up to the psychologist if there’s a possibility that it can be reported even if I don’t want it to be.

(For context, I live in Australia. I know the laws would vary in different countries).