How on Earth do I solve this situation?

[john]

So I'm sort of friends with this girl at school (not interested in her) and she posted on twitter that she was going to hang out with these three girls two of which are a pair of twins. I really don't know why but I just saw one of their profile pictures (I'm not a creeper at all) and I sort of got interested even though I literally have no idea who she is. How do I tell my friend or have my friend help me talk to her or get together with this chick even if its just some weird date thing without her thinking that I'm some sort of creep (which I just want to make clear, I'm not) I'm a sophomore in high school pretty popular and play varsity baseball. (Just stating my situation) all help is great thanks!