Would this be something you tell your S/O?

My brother suffers from extreme anxiety and ocd. He’s very verbally abusive towards my mom. My moms pretty fed up and is thinking of moving out temporarily but won’t until I move to be with my fiancé.

My fiancé knows that my brother has anxiety and ocd but he doesn’t know the extent of the issues.

I asked for advice elsewhere on a topic that related to me moving to be with my fiancé and my brothers issues. Someone commented telling me that my fiancé needs to know ASAP about how verbally abusive my brother is towards my mom.

I just feel like it’s something he doesn’t need to know. I’m really the only person who knows the full extent of the issues and people that know little bits and pieces(like my sister) are very judgmental.