A, your understanding is correct ------- then, when you are a friend will not make things difficult for you, real friends will not use the benefits to make things difficult for you, even if he will come to your home every day to dabble in the meal, real friends can be your face to scold you in the dog's blood also will not be behind your back to say bad things about you, to your privacy as a talking point. It's hard to break it off when it's hard to break it off for yourself. (Perhaps it is difficult, but look at what you really think in your heart.) ps: On the basis of adherence to the principle of doing things to stay a part of the feelings, the first courtesy after the army it.
Two, your understanding is wrong ----- find a way to adhere to the principles you should adhere to and talk to him about it, in order to emotionally move people, to reason to convince people.