I agree with
@GadAbout There is no way we can tell what he is thinking. Sometimes Aspies just behave badly, clear and simple. Other times the behavior looks bad but the motive is not. Sometimes it really is confusion. We can never know.
Aspies are generally pretty honest, though, unless they have been so hurt as to feel the Truth simply is unsafe. But usually it is very hard for Aspies to just flat out lie.
Your best bet is to be EXTREMELY clear in your own mind what you what and be EXTREMELY clear to him what you want, think, etc.
Start at the very beginning.
Example: "What do you want from me? Are you looking for a girlfriend or a friend?" Have it clear in your own head what you want. Do you want to be just a friend or a GF and how long are you willing to wait if he decides to have you on hold?
Then, like a flow chart:
If he says friend and you want to be his GF: "I am not interested in being your friend." or "OK, I will have you as a friend...." and determine if that is enough in your own head. Or "No, I want to be GF and I am willing to wait, but not too long. Probably about 6 months top, then I am moving on....."
Aspies are great with data. Tell him what YOU are wanting, how long you are willing to wait for it, work out your own flow charts in your own head based on your desires, etc and tell them to him.
He certainly could be thinking Hey she will be there if I want her later! So disavow him of that but you might still be able to be friends. It all depends on what you want .
Just be very clear