Some bad advice here (might be some good too, didnt read all posts. above post is spot on) I don't have many encouraging words for you, or rather my english isn't as good as I would like it to be to get my point across but here goes. If your fights are so bad that you decide to break up then and there I don't believe there is much to do. You can try to prolong the relationship but in the end the feelings arent there and it will happen again in awhile. Hopefully you are not that guy as I don't recommend it to anyone. In other words, it's over. Accept it and move on. Losers try to cling on to their relationships and at best they end up being unhappy and married. You don't want that.
It's good to have friends you can hang with and hit the nightclubs. If you have many woman acquintances even better, time to start phoning them. Women do this all the time and it's something men should learn. This might not be an option though. If not, that's something you might want to start work on. There's no universal advice, everyone is different. Just try to keep busy and meet other women. Eventually you see her only as a friend. But, one more time, don't try to find ways to work this all out.
You have heard this all before, there are many women who would like to meet you. You may now feel that you are at the end of the road but it really is the beginning. Life is about expriences and I'm sure you have learnt a lot.