I think it's best to explain to them when the time is right about your condition with AS. Describe to them how it affects you and how you may turn out. This can include the emotional detachment. Hopefully, you will find someone who will understand and will love you just for you unconditionally.
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Joshua
We all deal with problems and strife, but it's how we deal with them that makes all the difference in the world.
"You are no accident!"
-Rick Warren