Well my mom said it comes with growing, actually you can't learn to be charming it comes naturally you just can, you can try to learn it but you will never truly do it right.
And charming is a bonus, you can just be you confident and show her, hey it's not a big deal asking you out, but it's a big deal that we are going out.
Yeah, I once thought the same but I somewhat changed and I am more comfortable around girls lately. I just need to find the right one dang it!
You gotta get that confidence going man if you are not confident it makes you insecure and the girls will notice that.
If you love her or like which I assumingly say you do since that is why you asked her out, and she said well not to the prom then you should have thought about well not to the prom okay then date, and I can say she would have said yes.
And if you were like showing her very much interest into her, she could open up and go from there, y'know if a girl has interest in you and you ask her you wanna be my girlfriend don't be shy to say it, like.
"Hey, I notice there is a connection and I am feeling attracted to you so you wanna I don't know be my GF, though I don't want to force things if it's going to fast." be sweet, confident and softly about it and she should either say yes I want to or well maybe but let's not force it and if she doesn't like you well it wouldn't be in the question since she wouldn't have come with you on a date if she didn't like you in the first place.
@Runa y'know what , I don't think it's late, how about you call her if you have a number and ask her on a date?