Most of the times in a relationship a lot of of fights can be avoided if you simply insist your partner for doing something you expect them to do instead of arguing with them about why in the first place they didn't act the way you expect them. You should always have a place in your relationship where you can demand things like a child. When you demand for something, you feel the happiness of your partner taking efforts for you and your partner feels the happiness of doing something for you. One of the ways of showing you love someone is just to accept it. Sometimes your partner may do something for you without his whole heart because of any reason.