<human>: Could you distill the essence of the text into 1-3 sentences?

I [17M] have had quite a crush on said lady [17F] for a few months now, as a nervous person I found it hard to find the right "moment" if you will. I thought Prom, what better time to ask her out? But now she is going with someone else. 

My friends who are planning on going all have dates, I don't want to be the only one of us without one. 

How should i approach prom?  I really do not want to be standing by myself on the sidelines, and I don't want to be third wheeling a friend and their date.
<bot>: Was planning on asking a girl to prom, someone else beat me to it. What is the best approach for me now?