Need help with a girl (need to see if she likes me back)?

I am completely smitten with this girl. She has an amazing personality and I enjoy every second we are together. For the past few weeks (ever since we both...ehem...threw up...after a party one night in my dorm) I have been getting to know her and we spend hours a day (every meal too unless one of us has cl) just talking about random stuff, doing homework, playing cards (she taught me how to play palace!) and watching CSI: New York. Today we are going to a lazertag place with her roomate's volleyball team. I havent been looking for specific signs when we talk, eat etc. to tell if she likes me, so what should i be looking for? Think she and I should break away from the group today at lazertag and hunt down the 10 year olds on our own? Thanks in advance for your answers.