Sometimes we are gluttons for punishment. I know personally that this is an area I have struggled in. This doesn& mean ignore what hurts you.because you have to address it. Once you have addressed it and had some kind of closure.
When you love someone. truly love them friend or lover, you lay your heart open to them. You give them a part of yourself.that you they can hurt. with a map of where to cut you deepest and most painfully on your heart and soul.