I've been diagnosed a few years now and have just realised although I have had my suspicions that my brother is also BPD. We are grown adults (I'm 38 he's 40) and he is struggling with addictions and doesn't know a thing about BPD or that I have it. Any suggestions on how to navigate this? Or anyone in the same boat? It has also given rise to some really weird feelings about my parents as we always thought we had a nice childhood. Although the more I've learnt the more I realised how invalidating my parents are. It feels like everything I thought I knew has been flipped on its head. Can anyone relate?