SUBREDDIT: r/relationships
TITLE: Girlfriend[20] and I[21/M] fight constantly and I don't know what to do
POST: Just a little backstory: we both go to college about 6 hours away from each other. We have dated for around a total of 6 years and we broke up in January of this year and we got back together 2 months ago. During this time, she had another boyfriend and I was  with other people. We realized that we love each other and wanted to be together. It started off great; I went to her brother's wedding, we saw each other a few times within a few weeks, and the sex was great. I haven't seen her in a month and we are finally going to see each other this Sunday. Recently, we have been fighting and just generally agitated at everything. I wouldn't of considered myself the jealous type in our past relationship but for some reason this time, I seem to be getting jealous and just angry whenever she goes to the bar and hangs out with her guy friends. I don't want to get jealous or angry but I can't help myself. She says I am trying to control when that is really the last thing I want to do. I just want to do anything I can to help us get through this but I am unsure what to do.
TL;DR: 
GF and I have been fighting for over everything for the past month and I'm not sure what to do. Just want to make it work