URGENT! I need some advice about my best friend situation.PLEASE HELP!?

I need some real advice. So I've been friends with my best friend for seven years (since 7th grade). We've been really close been through plenty of family drama and friend drama and remained extremely close friends. Told each other everything went everywhere together spent a ton of time together. We were practically conjoined. Then I start talking to this guy I really like. And after awhile we decide we want to hang out together alone. She had her concerns because we were going to be at his house alone and she and one of my other friends thought he might take advantage of me. I thought it was kind of irrational considering he went to our high school and my family knew where I was going I had my phone on me. I'm not saying it was completely out of the realm of possibilities I'm just saying it was unlikely. So I ended up telling him about this. And he kinda just shrugged it off. She however read my text messages and then blew up at me about how I saw talking about her and making fun of her. Yes we did laugh about it but it was an awkward situation of course we laughed about it. So we were fighting and then eventually she got over it. I ended hanging out with the guy I liked and then eventually we start going out. This is my first boyfriend since we've been friends. And then different things we start pissing her off. So we've been fighting on again off again huge screaming matches. It's been driving my family insane. But she is my best friend so I try to hear her out even when I think she is just completely wrong. This has been going on for about 4 months now. She'll start these huge fights usually about absolutely nothing and sometimes she tries to stop being friends with me all together. She doesn't like it when I hang out with a mutual friend without her and she gets pissed when I hang out with my boyfriend and even my sister. I've confronted her about it and she has been working on it and the fights had gotten less frequent. Then we went down with some friends to the lake to take a little vacation since it's summer. And everything was great we had a lot of fun doing all kinds of different things. Until the day before we were supposed to leave. We went out earlier that day and then came back to the house for lunch and I was making lunch and we were gonna chill and put on a movie. And I was tired because I hadn't gotten much sleep the night before. And then she starts throwing a tantrum because apparently I had been a mopey ***** all weekend and I was acting like I wasn't enjoying myself. And she blows this whole thing out of proportion and she was the one who drove down their and she tried to pack up her stuff and leave us there without any other way of getting home. So I wasn't about to get left there and I wasn't going to listen to her scream at me anymore either. So I called my sister and I had her come pick me up. As I was leaving she told me to have a nice life and to go F myself. I thought she would get over it like she always does but she ended up deleting not only but my entire family from facebook and she deletes me as her friend on xbox live without saying a word to me. So I was under the impression we weren't friends anymore. A few days later she calls me up wanting to talk. And I told her I wasn't ready to talk to her. And she says I was the one who just walked away from our friendship. and she just deleted me to get perspective and such. I just told her I wasn't ready to talk to her and have left it alone for a few days. My question is should I continue being friends with her? I care for her a lot but all this fighting is wearing me down. I mean she has been my best friend forever and we've been through so much together. I don't want to stop being friends with her but she has really hurt me and I don't know how much of the fighting over nothing I can take. Any advice on what to do would help me out a lot. Please. Thank you.