Break ups.

Why is it that break ups are always so difficult? Why can't it just be easy as starting a relationship? I know those are most likely two very dumb questions but I was just thinking about them. I don't understand how a relationship can go from being great to 'lets break up', 'we need a break' or the infamous 'its not you its me'. I understand that there are two people in a relationship and that each individual sees things differently. What I don't understand is how someone can see their relationship falling apart and not speak up, or speak up once you've broken your partner in two. 

If you really love someone then you are as selfless as possible. When you take it all, all that they can give and give nothing back, or have nothing to give because you don't want to then let that person go. They can find someone who will love them with any conditions. If you are not that person don't play with their hearts, its not fair.