1. She already has a boyfriend
2. You go to the same church
You shouldn't ask a girl out who already has a boyfriend. It makes the guy pissed off and he might want to hurt you. The girl will get upset and might not even want to be friends. You need to learn some patience and wait until they break up(which they eventually will, especially if he really is a jerk). You can afford to wait since you go to the same church because it is not like you will never see her again. Whenever she comes home from school, you can be there asking questions about her. People love talking about themselves. That way, she'll see you in a positive light. You can be friends for a short time and then, after they break up and time passes, you can make your move.