Bizmarck,
its quite possible she could have been flirting with you, if experience something similar to that situation again in the future, ask her if she is busy at the moment. If she says no im not, trying asking her if she would like to go for a walk. This way it is just the two of you, your not in a crowded coffee shop. Try to get her into a public place that is more comfortable for you. However, if she says no to the walk, she's not interested and move on. Women like confidence which i know is hard for aspies, but if you feel more confident in less crowded places try to get into that natural enviroment.
I can flirt but its very childish flirting. I once, at the age of 23, pushed a girl i liked into the snow when we were walking up a trail together. Very similar to when a girl pushed me to the ground in grade six, then a couple days later she came to talk to me.
I admit i have always been pretty social as i played a lot of sports as a kid and have made many acquitances over the years but still seem to be oblivious to the more subtle forms of flirting.
The following are examples of possible flirting ive learned over the years.
If i girl says they miss you, there flirting with you, don't try to make some sarcastic comment because you don't understand why they said it. I didn't find this one out into it was already too late.
If you happen to be alone with a girl and they ask you what your thinking, don't say nothing because your scared the girl is going to snap at you for telling the truth. Lean in close to them, tell them how beautiful they look or give them any other compliment you can think of, then kiss them.
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Ralph Wiggum has my vote for president of the United States! I especially like his immgration policy. STRANGER DANGER!