Is AUTHOR wrong in the post ? POST : I was at ball with my friend and I happened to bump to one of the girls near bar. I immedietly apologized and the girl said its ok as long as I go get a drink with her (she wanted to pay for it), I kindly declined and told her maybe later (which was a lie I didnt like her at all but didnt want to hurt her). My friend then tried to persue me into going to her and getting a "free" drink (for him too), I didnt want to do that but since I was already a little bit drunk it didnt take much to accept it. She gave us the drinks and out of nowhere another two girls appeared and started to talk. When she saw me being more interested in them she left. 
Some time later I was going to take a photo with with my friends, when she appeared again and asked me for a dance, I told her I am taking a photo with friends and that I am bussy, which she responded that she is leaving soon and she is going to be waiting somewhere for me. I didnt want to decline, but also didnt want to dance with her. 
I told my friend to help me out and that when I approach her to just take me away and say that I need to go somewhere.
Well... She happened to still be around and yeah.. she heard it all. I didnt know what to do so I just ignored her.
How much of an asshole I am?
I usually never do anything like this and I feel like I could've really hurt her or maybe I am just overthinking it. What do you think? 