Me and my girlfriend went out for like 10 months and during our relationship she feel in love with me I loved her so much but I wasn't sure If I was in love yet

At about 8 months we started getting into problems because she believed I didn't spend enough time with her and I kind of brushed it off because I didn't think it was too serious I thought it was a phase at about 10 months she breaks up with me and says she never wants to be with me again we get back together the next day and she says that I have to prove to her that ill spend more time with her before we get back officially a week goes by and I'm perfect with her and on the 7th day we go out to a party and she ignores me the whole time like I'm not even there I confront her about it and she tells me that she's just gotten to use to be alone on weekends and she thinks she needs time

Later that night she calls me again and she tells me she needs time to be single that she doesn't feel the same way for me anymore and she says if were meant to be well be together again she also tells me she wants to be friends because I'm her best friend still and that I'm all she has in the world

A couple days go bye of us going out with the whole group and not talking and eventually I hear something about one of my friends and her liking each other I confront her about it and she tells me its nothing serious she's just lonely

A couple days after that were talking and she invited me to a club and I tell her I'm going to go but then I decided I couldn't handle seeing her at the club so I kind of blow her off and the next day I hear about her kissing some guy she tells me it was a drunk kiss

The next day were at a party and she's drunk and she confesses everything to me that she doesn't want to break up also that the guy she kissed is just her friend and it was just a drunken kiss that she's still in love with me I just have to prove to her the couple things that she wanted and then we can get back together she sleeps over and we have sex

The next day after that I see her and I hear they are becoming a little more serious and I ask her if we can talk and she says no because she's scared of me and she doesn't trust me...

I'm 19 and she's 18

Would her being drunk mess her up so bad that she would have sex with me? And it wasn't even that drunk

What do you think?

The things she wanted me to do is spend more time with her, get a job, and go to school

This may be obvious but she is not completely happy or satisfied with you. There is a lot, in her behavior, that says she wants to, at least, test the waters with other people.
There is a real need for you to talk with her and find out exactly what she wants.. and you have to be ready to hear the worst.
What does this mean?: "I ask her if we can talk and she says no becuase shes scared of me and she doesnt trust me......" Why is she afraid of you? Do you hurt her?