Physics is Phun said:
Uhg, I don' know. I just want to be with her. Preferably in a romantic capacity but also willing to be friends for the time being.
That opinion might change though when her "boyfriend" comes home for the summer. I just have to find out somehow if she's interested in me cause we've gotten really close over the last few days and if she is interested I think we could have something really good.
I also have this other nosey friend that keeps asking me if I like her or not. She is both her and my friend though, so I can't be certain if her motives for asking me are just curiosity, or perhaps the other girl asked her to ask me, or maybe she just wants juicy gossip or something to blackmail me with (she is kind of a meddler)
ohhh, I just don't know.
For now, don't discuss this matter with the third party (your mutual friend)!
Well, if I were in your shoes, which I am not, I would just tell this woman in whom you are interested exactly how I feel (but that's me), and let the chips fall where they may.
I never liked the games people play. I was always direct and straightforward, and I prefer to be treated that way myself.
It seems the problem most people, men and women, have is the fear of rejection, or even downright rejection if and when it comes. Well that's part of life. I got turned down plenty of times. I didn't feel great about it, but I got over it. My existence doesn't depend on whether a certain person likes me or not, or wants to be with me or not. One needs to feel good about oneself.
Right now your in a holding pattern, and that will likely get you nowhere!
Tell exactly this - "we've gotten really close over the last few days and if you are interested I think we could have something really good." But be prepared for the fact that she might not share the same opinion. You could preface it with "while you view me as a friend (or just a friend), . . ."
Or you could simply ask her what she is looking for in a relationship.
If you can be patient, you might try to discuss, as friends, what each other wants in a relationship.
That is exactly what attracted to me about my wife, before we got married. We were just casual friends for about 9 months until we started dating. She and I would talk on a variety of subjects, including her interests (personal, academic and professional), my interests (personal, academic and professional), and each other's background. After we started dating, we got more serious about things personal and family histories, and what we expected in a relationship. We became engaged 3 months later.

We lived together more or less for a year because I was in school about 90 miles away and she didn't want to be married and living apart.
Have you thought about discussing this matter with your mother? Seriously.
I have to often wonder why teenagers can't discuss such matters with their parents. I could with mine, and as a father, I would hope my kids can come to me with such matters.