You sound very young. We were all young once and made all of the same mistakes (at least I did).
You're not pathetic, void of balls or a whimp. You have to understand that this group is not real forgiving (man that's an understatement).
Don't beat yourself up over it.
It's obvious she just isn't into you.
Move on and don't be so forward in the future.
A trip here to Thailand wouldn't hurt either. After a day or two you'll forget she ever existed, let alone where you came from, your family, your school, your job or your home