what do i do with this girl!?

ok so im in grade 9 at my school and theres this girl that i see every once and a while and shes pretty hot like 8.5 outta 10 and i like her and she told me to text heron friday but i didnt have her number so i asked her for it on today and i texted her and she was sad that nobody liked her and i said i liked her and she said it was sweet cause i was so attractive and i asked her if she liked me and she said yes because i asked for her number and remembered that i had to text her. and we texted alot more and we were playing a question game where we ask eachother questions and i asked her if shes ever been high and she said yeah and she asked me if i wanted to get high with her and i said sure. and we were texting alot and i kept telling her she was hot and she kept telling me i was hot and than she asked me if i wanted to wheel and i said sure but she told me she had a boyfreind and i didnt know that and she told me that she was gonna break up with him for me and i was feelin pretty hot by then and i said sure but what im askin is should i do this thing with her like with everything but i don't know if i should so help me please! and sorry it was long.