Thousands of years ago, she once told him that love is a thorn stuck in the throat and heart, and it will kill her if she is not careful, but she swallowed the thorn willingly. Without love, he would not have this fatal thorn, so naturally he would not understand the pain that stuck in her throat. But maybe only he knows that the thorn is always there. It's just that it's too shallow, and his reason is too deep.
(Forgive me, the copywriter is incompetent...)