I've bounced around...1st - my age or a little younger (til about middle school, thinking kissing was going all the way, had dreams about this for years, one with the Charlie's Angels kissing while tied down on a table, thus for awhile I thought I got over that hump when in like the 3rd grade, I only thought girls were nicer and easier to talk to and get complitments from about my drawing/writing, guys for playing, playing sports, and exchanging physical prowess/achievement adoration - as in you can run fast or such not in the um...other stuff)
2nd - older (I thought so they could drive me to fun places I was not to get to myself and if so not without and older companion)
3rd - older or same age HS
4th - after a long time of older women not taking me seriously, ones my age ignoring, I remembered younger were often impressed by me and since, this may sound strange but I also think - ones who feel my age, still have a need to experience the practice years missed when younger as my practice is wanting anyway, fem/male relationship wise I think even a younger women would be much older then me - in that regard I'm probably between 3rd grade and Middle school age, so in a way even dating a woman a few years younger would be older to me.
Good news then dating a younger female aspie would make us both happy, sort of, as many want older guys.