if she is sending you good vibes i would go for it. she would let you know if she weren't interested.
the thing is - you can't predict the future. you are young and this may not be the girl you marry and grow old with (although you never know).. but you will never know what it is like to have a romantic relationship with her unless you try. my life experience is that friendships like this don't stay friendships forever - they typically progress to a romance with eachother. if not, then one day one or the other starts to get involved with somebody else, and then you lose a little bit of the friendship between you. that's because a person can't really have a "romantic chemistry" going with two people at one time and sustain both relationships, even if one is platonic and the other is not.
