She sounds like a good match. My AS bf was not interested in a relationship when we met either. Mostly he was afraid to lose his space. But basically, he had a string of bad relationships.
You can test the waters with her little by little by asking directly for one thing at a time. Space, quiet, time alone to pursue your interests.
Chances are you will hurt her from time to time, but it is up to you to patch the hurt by taking ownership of your actions and trying to resolve conflicts in ways that work for both of you.
Physical intimacy can be intimidating no matter what. Good relationships are awkward at first, but that is a good thing because it is something the two of you get to figure out together. In spite of what men think, women are tremendously forgiving the first many rounds in bed, and she will have the same learning curve of what you like. Most likely you will both find something new.
Running away is just using avoidance as a coping skill. You have to teach yourself other coping skills a little at a time. Confront one issue at a time and let her digest that before moving onto another issue. You should hold off on disclosing the AS, as what I have read on the internet (with the exception of WP) and what I have experienced are two different things. If she goes researching it, she will get a lot of misinformation. I think a better strategy is spend a year or so adjusting to your quirks and her quirks (we all have them), and as time goes on you can explain things such as “I do abc xyz way because my brain is wired a little differently.” Remember AS is not bad or an illness, it is just a different approach to things.
I personally have never been happier in a relationship. It took time to understand the space issue was not that he wanted to get away from me, but his brain was over stimulated and he needed space. I now get to enjoy my own space when he takes his. We have a nice, quiet existence at home, I am not obligated to entertain his friends and family as he rarely has them over, and I know he really likes me because he keeps me around! His motivations are completely opposite of an NT male, which is so refreshing. He spends all day doing his thing and stops from time to time to give me a love tap or sarcastic comment to remind me he hasn’t forgotten I am there.
I encourage you to put aside your fears (we all have them) and take the baby steps you need. It sounds like she really respects you and in turn will respect your needs. Maybe get a cute little card and write a thank you for the little things she does, tell her you think of her often, and tell her you just need to take things slow.
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