What should i do with this girl?

Robbie, as an older male who's experienced these types of things before, here's my advice to you : forget about this girl and move on. See, if she broke it off, it means that she is no longer interested. When a woman is no longer interested, there is nothing you can do to CONVINCE her to have feelings for you. That is something that has to happen naturally. Also, something you need to understand about women is --- the more you show them that you NEED them, the less ATTRACTION they will feel for you. I know it sounds crazy, but it's true. See, by you always being available to talk all the time through FB, text, or whatever, you are just showing her that you are probably lonely and desperate for attention. This IS NOT attractive to women. So what you need to do is just move on. See, no matter how much you like this girl, and no matter how funny, smart or cute she may be --- at the end of the day she can't make you happy. No one can make you happy. Only you can do that for yourself. Besides, there are MILLIONS of girls out there who would love to get to know you, so never feel like life is over or that you are a loser if you don't end up with a certain girl. It's just not true. There are plenty of women out there! So, just get on with life, focus on having fun for yourself and from now on let the ladies chase you. Never chase them. That will only push them away. Believe that you are an awesome guy who deserves awesome girls, and that is what you will get. Just don't depend on them to make you happy or feel good. That is no way to live your life. Good luck buddy!