I can't tell you the number of friends and acquaintances who come to me with their problems after they and their significant other split up.
  Often, the first question that comes out of their mouth is, will we get back together?  The simple fact of the matter is, that is up to you as an individual and what you are going to do in order to resolve the problem that is before you.
Although this may sound simplistic, it is a fact of life and you need to do everything within your power to change whatever it was that caused you to breakup in the first place.
  This often requires you to get to the root of the problem and not to simply look at a single event or series of events that led to the breakup itself.
  Whenever two people were in a happy relationship, it rarely ever breaks up as a result of one of them being unfaithful or perhaps the two of them having differences that can't be corrected.
  These are things that tend to creep into our relationship and they need to be addressed before you can resolve the situation.
Write down on a sheet of paper everything that you know about your relationship, both when it was happy and whenever it was in the process of breaking up.
  You would probably be surprised to find that there are some key differences between the two.
  Work on those differences and see if that will be enough for the two of you to get back together.
  Instead of asking, will we get back together, tell yourself, I'm going to do everything in my power to make it happen.