What i can say is that you can try, have fun, get nice experiences from this relationship, but don't expect that this will last forever. (Chances are like 5% XD) If you will break up with her, it's totally fine, i'm sure there will be 1000 girls better than this one you've met. Actually i've met my girlfriend in HS by huge accident and we know eachother now for 3 years, even if she lives 200 km away from me right now we visit eachother every weekend or free days. (PS: Love-distance relationship are kinda shit, but you know love is love XDDD)
Anyways don't attach yourself to girls, live your life they are not most important part of your existence and remember bro especially in this age girls are not really patient, trustworthy or whatever, they like to betray, drink and smoke, depends who you'll met of course, so be prepared to face many weird situations and sometimes even hurtful situations Good luck in your highschool life! Enjoy it man.

They're basically shit bro, they are whores and dont count and they like are too small yet,.