In fact, this is normal, because it is the same from any angle. If you go home on holiday and spend a long time with your parents, you will feel that your mother has started nagging, and your father only knows how to make peace at home. You feel bored and want to go back to school. So is a good friend. I go shopping for dinner arm in arm all day, come back to chat and sleep at night, and my girlfriend comes to see her all day. After a long time, you start to get bored. Why do you think we stay together all day? Then they "don't like each other", so the relationship was cold for a while, and then they got back together.
You become bored because you start to need your own private space. The longer a good friend works, the stronger the other person's penetration into his own life. When you start wearing the same style of clothes, you will feel that you want to touch something new. You were very happy to have dinner together. Now you will feel like eating with others, walking alone, and seeking private space under the relationship of good friends. This desire will gradually evolve into your boredom with your good friends.
When you find a private space, enough to be alone, you will recall the days when you went to the restaurant hand in hand with your good friends, drank milk tea in the street at night, chatted gossip and painted Weibo together at night. Every relationship and every state of life has its own "degree". Grasp the "degree" and this will not happen again.