I told my parents my partners family secrets

Hi all; me (24f) and my partner (26m) have been together for 3 years. We have been living with my partners parents for 5 months so that I can continue my further education (my collage is near to his family home). I have been missing our friends and my parents, so I came to my parents for new years on my own (we spent Christmas at his). My partner recently confided in me that he was quite severely physically abused by his farther as a child, and I have been feeling very torn since; his dad is different now, that’s clear - he’s making an effort to be better than he was. I still feel hate for him, but I’m conflicted - we are staying rent free at his house, and he is trying to be a better dad. I have found it tough to navigate - since coming home to my parents, I have felt relief. I (as most people do) got quite drunk and as a result quite emotional too. I confided in my parents my mixed feelings about my partners farther and his abuse, but feel awful for sharing my partners intimate family history. Is it wrong to keep my sharing of this a secret? I don’t want him to think that my family see him differently, because they dont, but I also don’t want him to think I’ve shared secrets that weren’t mine to share in the first place. Please help, AITA?