How do I gain a friendship back?

Asked by kayyyyleigh (404) November 28th, 2009 from iPhone

my best friend [was] my best friend since fifth grade and i am now a junior in high school. we “fought” meaning we would say I hate you jokingly, walk away, and forget about. we never got mad at each other. but then I started to, when she would flirt around with this guy who she used to like, and now is my other friends boyfriend. and Lorie (my best friend) had a boyfriend in college.. then one day I said something about her ex, something that previously had been acceptable to say. she got mad and walked away from me at a football game and we didn’t talk for a week. i then texted her, and we yelled at each other for about an hour, and she accused me of being jealous of her. then we didn’t talk for three weeks and one of our friends, Robert, tried to get us to apologize. she used some.. harsh words. a week later I apologized (for nothing) and she ignored it. we haven’t talked yet and I don’t know how to re-establish our friendship. any help(: