Do these girls like me as well?? What do I do?

Ok well, Im in year 9 approaching the end of the year now, im 15 and a half and I'm kinda head over heels for 2 girls at once. What a drag TT,TT this stuff is hard. Anyway, as you can tell I'm kind of bad with social skills so I'm not that good at talking with people. Anyway, to tell you about myself I am 5 foot 8, like martial arts especially judo, like to draw a lot, quite good at anime, and am pretty good at most subjects but in truth don't put the necessary effort into most of them. (My marks are still overall decent though) I hang out usually with a small group of friends. At school sometimes I behave rather loud if you know what I mean, voice my opinions about things but this is more a cover up to hide the shy me than anything else really. Anyway on to the two girls I like, theres a really cute red head in my philosophy cl. Occionally we talk after cl about what we were just learning about (ethics) and it usually makes for interesting conversation. She even told me that she thought my view point on ethics was rather interesting. She doesn't talk to me much otherwise. She's always sitting in a bug group with half the other girls in our year level at lunch. The next girl is in my homeroom cl and a few of our other cles. Shes in my cl on law and business studies as well. We seem to have a few things in common but I haven't been speaking to her long. We usually talk after school. We both catch the same transport home and we were talking recently. Its not a 1 on 1 conversation though as her best friend is always there with her. What do you think? Do either of them like me? And if so, what should I do??