If a girl sits really close to you?

I've been having a study session with a girl and I think she's starting to like me? First study session we kept our distance but I teased her and played with her a lot and she really had fun. The next time she sat next to me for some bs reason and we ended up sitting really close, our legs touching the whole time and she would touch my hands with her hands when flipping the pages and stuff.. is that a way of a girl hinting to ask her out?
If a girl sits really close to you?
Post Opinion