signs she likes you:
puts her hands on your shoulder, or arm, give you a nudge
invites you to lunch or to a movie
leans in closer to you when you sit nearby and talk
sits close to you when it is normal for people to sit farther
honestly though, I doubt many girls like me and I don't think I can sustain a girl's interest. again, as aspies we can't read the girl's mind, which creates a lot of unnecessary stress - does she like me? am I fooling myself? is she getting bored? the performance anxiety makes us more introverted and less laid back - a major turn off.
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Some of the threads I started are really long - yeay!