The meaning of the song "Gentleman" Joker Xue

When I listened to this song, I thought of this story: We have been childhood sweethearts for many years, and the girl regards the boy as a very trustworthy brother, but the boy has always liked the girl silently. She knew very clearly that she couldn't confess her feelings, and once she did, she would fall into a very awkward relationship. It would be better for her to never know, and to always be able to protect her. But love, like poverty, cannot be concealed. The girl still discovered his feelings, maybe it was the kiss he couldn't help but in the afternoon, or maybe it was his eyes that became more and more passionate. There is no turning back. Faced with someone she doesn't love, the girl refuses and keeps an awkward distance. There is no way to pretend to be a brother and hug her and touch her hair affectionately. I can only act like a gentleman to talk to her. It feels like a very humble unrequited love.