Yes, at the time I think I was actually flattered. I ended up being her prom date too.
I've noticed that the girls that end up taking gay guys as their dates to prom normally do that because they can't get a straight guy to go out with them Just saying
I was a gay best friend in high school without even realizing it.
Did you not realize that you were gay (which I doubt) or did you not realize that someone actually considered you to be their best friend (which is much more believable)?