why?

Why is it that those who u luv the most are the first to hurt you?
Is it because we hold them to another level of expectations compared to everyone else that we hurt so easily when they do us wrong?
Or is it because we are so quick to judge their flaws and mistakes when its towards us?
Why is it that those who u luv the most are the first to treat you like dirt?
Is it because like the dirt we move two inches further down and back to where we were?
Or is it because we like being mistreated and stay there to get hurt?
Why is it that the person who u luv the most till death do u part IS THE FIRST ONE TO LET U DOWN AND THE FIRST ONE TO DISAPPOINT U???
Is it because we hold u up so high, placed on a pedestal in our hearts that you take advantage of not being able to fall or is it because the hurt and the pain u bring the person who loves u dear reminds u of the power u hold on that person... I'd just like to know why.... Answer my questions for once and for all... I just want to know why...