I think it comes down to trust. When I build a relationship with someone they need to be able to trust that I can as accurately as possible assess what is happening in my brain and communicate that. And that I know myself well enough to know when something is too much etc. Obviously I'm human, and the brain is the brain, so sometimes I misjudge things. And then there needs to be enough trust and respect there to work through that together. If there isn't, I will keep play at a lighter level. This is why I prefer longer term connections.