But the real possibility is that you are thinking. Although you really don't show it in your life, you don't feel it, but your subconscious mind records your every feeling, and dreams are the export he tells you.
Therefore, people who like the subject should actually think about whether they still can't let him go. If they think they really can't let him go, then try to save it. If it can't be undone, so be it. Time is the best antidote.