First of all, waste your time.
In the process of communicating or getting along with anyone, we all need to spend some time. In the process of communicating with sincere friends, we feel very happy and our time is not wasted. But when we really make friends with others, but he doesn't regard us as good friends, we don't need to waste time on him. In this process, we can't get friendship, and wasting time is the result of making friends carelessly.
Second, waste money.
I believe everyone has had such an experience. When you go out with your real good friends and girlfriends, everyone will consciously adopt AA system. After friends pay money, everyone will take the initiative to transfer their share of the money. In this process of getting along, we are very comfortable with each other. However, when we make friends carelessly, you will find that when paying the bill, he will avoid it in various ways, such as his mobile phone battery is dead, or he will ask you to give him money first and then transfer it to you, but in the end he will never give it to you, and he will always take advantage of you in disguise, which shows that he doesn't really treat you as a friend, but is just using you to make you pay for her.
Third, waste feelings.
Besides family, the closest relationship with ourselves is friends, so each of us should make some good friends who can stand up for you when you need them, but all relationships are mutual, not unilateral. Sometimes you think he is your friend and he is in trouble. You should help him. In this process, you pay your own feelings, but when you encounter difficulties, you will find him.