Hi,
Your post made me think about my last relationship, and I just wrote a long thing about it in a separate thread.
Since I'm on the other side of your question as the NT (but also HSP and HSS) who was with someone who has AS, I can only respond from that perspective, which obviously also is entirely subjective.
I think knowing and accepting yourself as you are, with or without a diagnosis, is key to making the right decision in how and when to share with your partner that you have AS. My ex waited months to tell me, but he hinted at it numerous times, which I'm now realizing I didn't really get. He didn't know that I had researched AS extensively before I met him and it wouldn't have fazed me. I didn't think he had it because he did such a good job at being semi-normal (I never fell for the conventional types anyway

) that it didn't occur to me. now, I wish he had told me from the get-go that he had AS. It would have made it easier for me to understand and support him and I would not have loved him any less.
I also wonder if mentioning the diagnosis is always the right thing. Some people get scared off by labels, or think they know your experience even though they don't understand it. They may have preconceived notions about AS that will prevent them from seeing you as the person you are. Or they may be like me, totally open and curious, and actually supportive of understanding how you and your needs may be different than mine. I do think the most important thing is that you are honest with who you are. That you feel open to be yourself, exactly as you are, and are loved as you are.
It's always uncomfortable to make ourselves vulnerable with people we care about. I think that's true for a lot of people. However, it's also the only way to know that you are loved for who you are.