Splitting up is never a nice thing, it hurts, creates sadness and upset. But with it brings something positive. I don't know your history or anything about
your relationship but I do believe that when a relationship comes to an end change is good. Change is necessary. it means you are doing something to help yourself (yourselves) taking a step out of the negative situation you were obvioiusly in and doing something constructive and positive instead of destructive and negative. You could end up back together but one way or an other you need to move towards making things better.
I'm not minimizing your situation. I don't know anything about it but I do feel that when it comes to an end there is only one way things can go - UP!
take time to grieve for the relationship you obviously thought would work at one point and then look forward.
Hope it gets easier soon for you.