why does love hurt so much?

I just don’t understand how some men can just be so oblivious to there girlfriend’s feelings. Don’t they know when they lie to us it just breaks our hearts a little more everyday. Do they even care if they hurt us at all. I just wished for once some boyfriends or matter fact all men would just walk in the women’s shoes for a while and see what we see, hear, and feel.just for a day or two, and realize how lucky they are to have a good woman in there life.