Having second thoughts about girl after asking her out?

I don't know why this is happening, because most of the times I ask a girl out this never happens. It just that there are these two girls who I hang out with to me both of them are cute. One is cuter (girl b) then the other one (girl a), both are nice. For some reason I felt more compelled going for girl a. Now that I did ask her out (I had asked her if she wanted to "hang out" and have lunch. I don't know if some would still consider that a date?) someone told me that I could do better. It is at the back of my mind that should I have asked out girl b instead and now that chance would be shot. I have decided to go and do it just because I still like this girl, but just have this nagging feeling. I don't know what to do.
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+1 y
I know girls talk so I don't know if I should even bother try with the other girl. Well in a way if it works out with this girl I it still would be straight and I would be a happy dude.
Having second thoughts about girl after asking her out?
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