It's the way you make me feel

Xiao zhan is depressed.. he is already 35 and alone. All of his friends are making progress with their love lives, and he is in stock in a single life..
until one faithful night, he made a mistake, with his best friend's younger brother.. What would he do if he keeps on appearing in front of him, asking for his attention. But he's too young, 10 years of age gap,

This story is inspired, from the kdrama that I watched a very long time ago, the title is "hey fox" I'm not copying everything just the situation.. of the two people with a very big age gap between them, and the younger acting like the mature one and insisting on having a serious relationship..