In need of some girl advice.?

theres this girl at school i like she is also kinda new she has been at our school a few months now. And ive talked with her 4 or 5 times now. And after i talked to her the first or second time one of her friends sent me a friends request but the one i like hasnt accepted my friends request yet is this good or bad? and i do like this girl so i got some what bold and asked her for her number she said these exact words well i just dont know you well enough yet. what does that mean when she says yet? I cant tell if she is interested in me or not i sometimes catch her looking at me when i look back she looks away is this good or bad? And now i want to ask her to hang out over the summer because this is the last week of school and all and i want to get to know her. but how do i come out and and just ask her to hang out do i straight out ask or work my into it and beat around the bush about it. and another thing is my friend did her own investigateing to see if she likes me when my friend ask her what she had second period she told her she asked her did her 2nd period cl go in the gym she said yes. then she asked so who do you think is cute in there she said are you talking about aron? she said she paused for a sec then said no. Then basicly my friend was forced to tell her yes basicly. Then my friend said she smiled and said that i needed to talk with her but when i do talk with her she doesnt act like she likes me. i asked her to hang out over the summer today she said well i dont know i got a boyfriend back home. so im really pissed to a certain degree i wasted my time. And to beat it all my friend who is a girl has been talking to her for me with out my permission and i was really mad at her and im no longer friends with her because of that. I asked the girl i like about it she said she hasnt rlly been talking to my friend much and i told her about it and told her i was no longer friends with the girl who was talking to her for me with out my permission. and she asked why we werent friends anymore. I said because of what i just told you she said well. then she looks at me the rest of the way down the hall i kinda switch subjects after a second or 2 of somewhat silence. I asked her what finals was she taking next she told me then quite again then i asked what job was she getting over the summer because she mentioned its the day before and i didnt ask what kinda of job i figured id ask her what job shed be doing. she told me a life guard at a public pool. Then she said well i gotta go randomly and i was kinda pissed at that i was about to say well f u to i gotta go to. what should i do when summer break is over talk to her? will she probably alrdy forgot the awkward moments by then? and should i talk to when school starts back up ? and the reason i wanted to say f u to her is randomly say i gotta go and act like she didnt wanna talk i can take a hint here i mean if you think she likes me then you guys can tell me so and ill try to talk to her next year.