How to Tell Your Partner You're a System

I would start by bring up the topic of DID or OSDD and see how they feel about it. It’s a good way to see how they would take it without being the main target. And if they perceive it well then you can slowly introduce yourself as having a system. Then it’s kind of easing them in and educating them so that they has more of a chance of understanding but also the possibility of protecting you and your system mates if they don’t respond positively.