So i like this girl.. please help..?

so ive liked this girl for a while now, problem is, shes going to a different high school. ive been single for a while and i want to be with this other girl. but, like i said, shes going to a different hs and on top of that, shes going out with another guy.. it hasnt been too long with him but still.. i try to text her all the time and ive told her that i like a few times, she even said shes likes me a little.. ive been really good friends with her for quiet a while and i wanna become more than friends, but with those two problems, i just dont know what to do.. pleaseeee help me.. thank you.