Please help me I really am confused

Before I begin let me share a little bit about myself. I am 16 years old am completely against the thought of marriage, true love, and long term relationships. At least until I met this girl, let;s call her 'h' for right now. I met this girl about a month and a half ago through an old friend and felt like I hit things off with her. Mainly because I got the vibe she would sleep with me. We talked for a couple weeks but then I went out of country for two weeks and herself the following two weeks. We had no contact with one another. About a week ago she texted me saying hello. My feelings for her grew fonder with absence and instantly I wanted to go out with her. I told her I didn't want to play games if she was interested in me then lets do this. No pussyfooting around because of the earlier promiscuous vibe . She said that she really liked me and that she wanted to go out with me but before we made it official she had to make sure with a kiss. When she got back from Oklahoma 2 or 3 days later we met up and hung out. We kissed. I knew right then that i fell, and I fell really hard. She told me that she felt the same way and I was relieved that the feeling were mutual. we were texting non-stop and even calling on the phone, something I have always hated doing but I managed to survive because I loved her. I know it may seem like I fell in love really fast and that it isn't really love, but I know without a shadow of a doubt I am in love with this girl. Yesterday July 5 I met her parents and she met my Mom. We had a great time, her parents loved me and I felt like everything was going great. Later that night I got a four page text explaining how she thinks we rushed into this to fast and how she feels that I will prevent her from having fun this summer. In her own words she told me "during the summer I tend to whore it up. I love you but I want to put this relationship on hold until school starts back up." I was confused and angry I didn't want to give this girl up so she can have a great time this summer flirting and having "flings" as she said, and then just let her back in my life when school started. She once described herself with the phrase"once a whore always a whore." It didn't make sense to me. I couldn't do it. She then continues to tell me she was afraid to get her heart broken again but I thought when your in love with someone you don't blame your past on them and you trust and believe they will take care of your heart with all their will. I love this girl I truly believe I am in love with her. It's huge for me because I have never even believed in love and I just don't know how to handle this situation. What do I do? Do I go back to her and try to change her? I am with this girl because of her personality who she really is not who people see her as. Please give me advice I need help.