How to make your crush like you without being too obvious? Help!?

kay.. I'm new to this catholic school and I made new friends. the girl i like, we were awkward before but now that we broke the ice. we're good friends. I'm not an open biual but she found out that I dated my same gender. Two of my friends from that school found out. I'm still afraid though. my other friend seems surprise and kinda disgust about it but then my crush(who's my other friend) told her that it's just love. My crush seems really okay about it and open. That's why we've become closer. We started hanging out often. She even accompany me to go to my former school. The thing is, okay. my ex girlfriend threatened her not to watch lost and delirious with me cuz we might just end up falling for each other.. My crush was intimidated and just agreed but she still wants to watch it with me but with other friends. Everytime I joke to her, she keeps punching my arm. she always like it whenever I treat her and she doesn't want me to treat others sometimes. Just her.. I don't know but I think I still like her. I also think she's bi curious by now.. What should I do to make her to like me?