I like her but i don't know if she like me or not..help ! ASAP !!?

First of all, its not weird to fall in love with ur friend, its actually normal. If she told you that she liked someone else, then she views you more of a friend than anything else. (if you were to date, then the relationship may not be a strong as you want, unless you make the moves). If she smiled and did nothing, she was waiting for you to do the next move. I would go for her and keep trying hard. Good luck