I'm sorry you're going through this. It has happened quite a lot to me as well, and some of those times were during times my boyfriend was physically present, so he could clearly see the numbness wash over. I would tell him how I was feeling (or rather, wishing to feel something..) and he would give me the support necessary to snap me out of that dissociative state again. They used to last longer when no one was physically around me. The worst thing I could do in these situations is say nothing about how I feel.