ladies i need your input. what should i do? :/?

[extraordinary]

So i have a friend who i've been friends with for a year and i basically started REALLY liking her and i'm a girl too. there are a couple very subtle signs that make me believe she could possibly like me too but i'm not quite sure. Like for instance, she would often text me she misses me and one time she texted me "miss you <3" after I just saw her the day before. and on valentines day she texted me happy valentines day with a bunch of emoticons and then she took a screen shot of my text msg and uploaded it to her instagram that read "<3 she made my day. #loveofmylife." before she put anything up about her boyfriend. she also like took a picture of me once at school because she thought i looked really cute and also uploaded that to her instagram as well. she often says things to me like "you're cute." I even caught her staring at me once while we were at the bar getting drinks. from the corner of my eye i saw her looking at me so i turned and we made eye contact for a few seconds then i smirked and she smiled quickly and looked away. by the way she knows I'm bisexual.

so about the part where she has a boyfriend. she recently told me that they're not "together" but still talking. i feel like they have fallen out plenty of times so i'm not sure how that's gonna go. but yesterday while we were texting about our plans to go to california in the summer (which she's very excited about) she tweeted on her twitter "it's weird how fast things can change." not sure what that meant