How can I help my husband?

I am not autistic but believe my husband may be. We have been married for many years but he moved out several months ago and I was devastated. Talking to behavioural professionals and reading online articles I release that all the issues he has had point to autism. I understand now the stress our relationship has had on him and the stress his behaviour has had on me. But I love him and want to find a way for us to continue to see each other. To do that I need to talk to him about this but I don't know how to introduce the subject. Any suggestions from those of you who have been through this?