Um did i just messed the whole thing up between me and this girl i really really like???

well im 16 an din high school in the US.nd well theres this grl named----nd i have seen her for like 3 moths but never realy talked to her and this lst mnth i was like *** it ima just go and talk 2 her.so i did so and i been talkin to her since then.i even got her number but i never call her we usually just text each other.so this month that ive known her i really like her and she told me she broke up with her boyfriend and that she is over him nd i asked her so who do u like and she said that no one that she was just taking things as what ever happens happens and a week after she told me that/ which was this friday i decided that i was gonna ask her out after school but she had to leave.so i sent her a text nd we had a conversation goin on and i poped a joke as me bein a famus prson nd thn she went wit it and ask fo my autograf nd i ask for hers jokin.then i asked her if i could keep her nd she said "only if i can keep u thn i just asked her if she wanted to be my gf did i jst blewit?