<human>: Can you condense the text into three sentences or less?

Around January 2011, one of my friends (F 17) who liked me asked me to her prom at her school. Since mine was the next day, I told her no because I wanted to go to my own prom, but then asked her to come to mine because I felt bad.

Later on, sometime between late February and March, I started talking to another girl, my current SO. Come prom time, I hadn't asked my crush out but we were getting closer and friendlier. I decided to go to the prom with the girl I originally arranged to go with because I committed to her and didn't want to go back on it. I asked my crush out about a week later.

Recently I was told that not asking my prom date about backing out and taking my crush was tacky. I defended myself saying that I considered it a commitment that I made and didn't consider backing away from it or even pitching the idea because I knew she was happy to go with me.

What do you guys think? Is it tacky that I went with the first girl or did I do the right thing?
<bot>: Girl 1 asked me out to prom, I invited her to mine instead. Developed friendship with now-SO and still went to prom with Girl 1 and now I'm told that it was tacky that I did.