Dance tonight and this girl....?

I just broke up with my gf 2 weeks ago and then along came a new dutch girl who doesn't like to talk a lot and doesn't like to hang out out except going to nigh clubs. Anyway, I thought she was hot and I always try to talk to her. About 2 days later, she started to sit beside me during almost every single class except for Algebra II and science. She always teams up with me for every single project (just the two of us). That is when I realized that I am crushing on her. I just got back from this dance at school and during that dance she and her other dutch friend came by to see how things are going before going clubbing. I was just dancing with some other girls and they two were smiling and talking while looking at me. They later came other and my crushes friend introduced herself and my crush asked if I wanted to dance. I said "nah...sorry im a little worn out" and then she said "oh...ok, well...i'm going somewhere...so...bye!" and then they left. Then I got tired of the music so i decided to go out and there I see them waiting there and we had a nice chat and then they asked if I wanted to go clubbing with them. I said "no thanks" and she said see you on monday. She was smiling and giggling and looking back at me before they went out the front gate.

Is she interested in me too or s she just messin' around?? call me dumb, but i'm really confused right now. should I make a further move on her??

sorry this is really long BTW.