It is both happy and painful to have a person in one's heart. It's like an extra who craves the stage and performs a one-man show. A person is sad, a person is happy to smirk, a person...
However, he knew that he could not get out. A seed was planted more than a decade ago, and now it is a towering tree.
Maybe when I'm old and sit alone on a bench in the setting sun, I'll still be smiling happily until tears come out of the corner of my eye.