Generally, when you dont like something is a person, you will move away. Avoid them and leave them. There are special instances where you move closer. Their are two aspects related to this.
1. You must be lacking confidence to listen to your own will. So you believe other person more than yourself. So you devaluate your own dislike. You ask him or her to assure you that your dislike is not valid. Sometimes you might also go to third person and ask them to authenticate your dislike to gain strength. You will make third person fight behalf of you with person whom you dislike. In this case, you might switch between two versions which appears like unstability.
2. On the other hand, it is also possible that the person whom you dont like is manipulating you. He/she establishes a set of rules in the relation which makes you sit in the inferior position. As you are in inferior role, whenever you dislike your boss, you tend to communicate that and then your boss decides that your dislike is not valid.