1. Want to draw a clear line: change the name of the first love's WeChat note to a full stop, probably to express that their relationship is over and there should be no more contact. In this case, the period symbolizes the end of a sentence, which means that their feelings have come to an end, and there is no more affection and contact.
2. Let go completely: changing the name of the first love's WeChat note to a full stop may also mean that he has completely let go of this relationship, has no nostalgia and regret for his past feelings, and has a deeper commitment and responsibility for his current family.
3. Ritual sense: Some men may have a sense of ritual by changing notes. To show that they want to say goodbye to the past completely. This may be a symbolic behavior, indicating that they have come out of their past emotional experiences and are ready to start a new life.
In either case, if you notice this change and feel uneasy or suspicious, the best way is to communicate frankly with your husband. He can explain the true meaning of this change, and you can also express your feelings and worries, so as to better understand each other's feelings and needs and establish a healthier relationship.