Why can't bosom friends become lovers? Why? You know each other, don't you? Clearly both of them have a tacit understanding?

Because we are bosom friends, we can't break this relationship easily. Maybe we all thought it was appropriate at the time. When there are problems in the future, we will unconsciously compare with the past and feel that something has changed. If two people don't go to the end after becoming lovers, they will lose not only a lover, but also a confidant. In the face of blue face, I can only sigh with emotion and stop at the ceremony.