What's the deal?

I'm in highschool. There's this girl that rides my bus that made me give her my Snapchat and ever since then she's snapped me every day. We joke around on there and she randomly sends selfies and says she's ugly in some of them (I think I know what it means when girls do that but I'm not 100% sure) and some she sent she showed off like one selfies she sent she put her hair up and the caption was "I finally put my hair up" and another one she sent was her with the dig filter that said "I'm a little red". She has a boyfriend that I'm friends with and doesn't talk to me around him. At school when we see each other in the hallway she jokes around about me to whichever friend she's by saying things like "he's gay" and laughing and she references some of our Snapchat convos when everyone is joking around on the bus. On Snapchat she seems like she either likes me or wants me to notice her and the opposite irl. What is this??