a little advice please ?

So i’m a girl, 17 and i think i like this other girl. Recently, i told some of my close friends i think i might be bi. On saturday night i drank a little too much and ended up telling that girl that i like her. Whenever we talk i feel like it’s flirty and stuff and i know this sounds super immature but we’re each others bestfriends on snapchat and we snap all day. I don’t know if i’m making it all up in my mind or what but she doesn’t know that i might be bi, well she probably does now, and i don’t know what she is. We haven’t talked about it since and i have a class with her tomorrow and we sit next to eachother. What do i do? Any advice ?