It may mean that he has a crush on someone he likes, may have a crush on someone, and may be that the other person has a lover and can't be with him again. Secret love will never work out. If you really like it, you must let the other person know.

Love yourself before others, be confident and thick-skinned. Even if the other person is a perfect goddess or goddess, don't be swayed by considerations of gain and loss, afraid of being rejected or something, and boldly say what you like. Opportunities can only be given to those who strive for them. Even if you may fail in the end, at least you have tried and won't regret it in the future ~