warm/funny male lead with cold/serious female lead

Ho Goo's Love- He's a cutie patootie, she's very cold and reserved. 

Strong Woman Do Bong Soon- Although she's not actually cold, he's the one that shows the most emotions and she's the reserved one. 

Beautiful Gong Shim-Again she's not really cold, but is a lot more serious than the male lead. He's very unique lol and he falls in love first in a very cute way. She warms up to him and his quirkiness in time. 

Eternal Love- She's cold, he's not. I would not call his love puppy love but he pursues her and makes her warm up to him. Is a Chinese drama.

Flower Boy Next Door- Another cutie pie male lead and a veeeery introverted female lead. 

You picked like the one theme that I can't really think of anything in China.

I guess To Be a Better Man - the teenager if I remember right treated a boy rather poorly and kind of used him to rebel while he actually fell in love with her(?)