If you have a pretty good idea of where she might be on campus, during class breaks, at lunch or whatever, or if you know where she might hang out after school, whether it’s the dance auditorium or wherever, you can plan to be there and then you can simply go up to her and say, “Hi, my name is jonbanksrules. I’ve been seeing you around a lot and I thought now was as good a time as any to introduce myself. I think we have a few friends in common too. Do you know Meagan or Rick?” She might be nervous too and just say, “Hi jonbanksrules” and forget to introduce herself. If you know her name, then say, “Your name is Karen, right?” or if you don’t know her name, say, “I’m so sorry, I forgot to ask you your name.”
It might be best if you could conspire ahead of time with either some of yours or her friends (since they all seem to like you and think that she might be interested in you) to have a plan to meet at Starbucks. She might feel less awkward if you asked her if she’d like to meet up with you and a few other people. If she says she can’t go on that day, then ask, “Well maybe we can get some coffee on another day, if you want to.” Her answer to that will let you know if she really is interested in you or not.
She’ll either agree to go with you and the group, or she’ll suggest a different day, or she’ll hem and haw and not give you an answer (basically that’s a no, without having to hurt your feelings or be impolite).
If she gives you definitive answers (she says yes, or suggests another specific day) then it’s pretty clear that she likes you.
If she says yes, to the group thing or an individual thing on another day, don’t just walk away. Say something like, “I heard you play guitar, that’s really cool because I love ____ fill in the blank guitar player. When did you learn to play? Oh yeah, I have a ____ fill in the blank guitar, but I’m not very good at it, maybe you could give me some pointers.” Or if you are good at guitar playing, say, “Maybe we could get together in the lunch yard and do some duets.”
If she hems and haws or is too open ended or has some unusual or cliched reasons for why she can’t visit with you, it’s likely that she isn’t interested in you, only likes you as a potential friend, has another boy that she likes, or is heavily restricted by her parents.
If she seems interested, then say, “Maybe I could text you. We could talk about guitars and stuff.” She’ll either give you her number, or come up with a reason for why she can’t give you her number.
Then, if she gives you her number, don’t play games (like older, but less mature men do) by waiting around to text her. When you get home from school that day, give her a short sweet text that says something like, “Hi Karen, it was nice to formally meet you today. Looking forward to having coffee on Tuesday : )” Then take it from there.
I wish you the best of luck.