Qiao Ning loves Shen Yu so openly and without hesitation.
She was a runaway from a family that favored boys over girls. She had been clinging to her childhood sweetheart since she was a child. She followed his footsteps and confessed her heart to him, even if she hit a wall and never looked back.
No one knows that Shen Yu also loves Qiao Ning, he loves her deeply, and he loves her humbly and restrainedly.
He was a marginalized member of a divorced family, growing up in poverty and low self-esteem. Looking at her enthusiasm, he felt that he was covered in mud and was not worthy of her brightness. He protected her silently, gave her warmth when she was sad, and helped her when she was in trouble, but in every confession she made, he drew a line with "just friends."
Her birthday is the end of her love and the beginning of his regret. When she was disappointed enough and put away her sincerity, and when he finally broke through his inferiority complex and faced love, the pull between childhood sweethearts finally turned around.
The lonely male protagonist who used to hide from love has started the ultimate pursuit of his wife, using all his sincerity to make up for his past debts. It turns out that in love, all inadequacies are excuses, all rationality is fallacy, and he will eventually surrender to his love for her.