Should I just say the hell with it?

Ok, so me and this girl have been seeing each other off and on for the last 3 years. I was her first sexual partner and she was my 1st real, real love. I'm 21 years old, and she's 18 years old. She's leaving for college August 13th and its a hour and a half away. She has told me on numerous occasions when she goes to college she wants to go single so she has time to get her life together and find what it is in life she is suppose to do with nothing holding her back and told me if its meant to be it will. Well, today we got in a fight because she has been teasing me for a few days and i wanted to sleep with her. Well, she said no she didn't want to right now. I took that as she didn't want me at all like that anymore and it started a fight. Well, she ended up packing her stuff and leaving. I've attempted calling her/texting her and other ways on contact but she won't talk to me. What do you think I should do? If I can't be with this girl now I'd still like to have her friendship unfortunately I know even if we're just friends its going to become romantic in someway as it always has for the last 3 years. So what do i do? At this point she's basically not even talking to me though.