There is no question that a break up can be very painful. Sometimes the actual break up is harder to deal with than the reason for the break up in the first place. Your initial reaction was probably trying to figure out how to get your ex boyfriend back instead of first evaluating the value of the relationship.
No one is immune to making a fool of themselves out of desperation and missing that special someone. Seeming like you are a beggar is the least attractive look of them all. The last thing that your ex-girlfriend wants to see is you sniffling and crying every time they see you. There is nothing wrong with you having some emotion when it comes to the issue of how to get your ex girlfriend back but you will want to do it with some indicated of dignity.
The best thing that you can do is work on yourself. In reality, no matter how bad it hurts, you have to admit to yourself and the world that life does go forward even in the absence of the person who may have once been the most important component of your life. Get yourself together, girl! This is not the end of the world! Of course you love her and you want to get your ex back but in due time all things that are meant to happen will happen.
Make sure that every time she sees you that you are looking your best with a smile on yourself. Keep yourself looking your best, get a fly new hairdo and maybe even go shopping. Make her see the boy that she fell in love with and make sure that you smile at him every chance you get.