How do I talk to this girl that I like? (Christian religion related,sort of)?

[GeorgeFraser]

I've been going for Catechism classes since February and I'm the new kid in class. The class started like 2 years ago so everybody kind of knows each other and sort of sinked into their "cliques". There's about 70 people in my class. There's this one girl, Kassandra, whoa 0.o Anyway, a lot of the guys in this class try to get in her pants.LOL. I sit at the far end of the room and she sits at the other. We pass each other looks and she always sits with her one friend (whom I know). I checked out her twitter account and she has this guy friend who always messages her. he says stuff like "I miss you a lot". He goes to her school and is not in this catechism class. Her facebook status says single and she's really down to earth and has the sweetest voice i've ever heard. it's like maple syrup or something.. haha =) please help me. I have never talked to her because she's always with her friends( mix of boys and girls) I wanna talk to her alone but I don't want to seem straight up. She might think that I'm a creep or something, you know.... sigh....