Ah right. So the consensus is: to ask her out and find out once and for all whether she's interested or not? And if not, move on?
The alternatives are 1) to never ask her and not risk rejection, but never know for sure.
or 2) to never ask her but assume she doesn't like you and just move on, but never know for sure.
Well, I don't know. How does a lifetime of never knowing for sure sound? Might be better than rejection. Depending on how fragile the ego in question is.
And rejection might be better than "acceptance" leading to engagement, marriage, 2 or 3 children (or childlessness), followed by a messy divorce and paying the mortgage on a house you never get to live in, and children who either hate you or never come and see you, but still cost you money.