Guilty Pleasures: Noona Romance

Loved the pairing between Han Young and Joon Soo, you see the persistence of the younger guy and the resolve of the older woman.

Storywise the male lead is definitely (way) older, however, when I see the ML and the FL together, the alarm bells ring: Noona Alert!

There's nothing more satisfying than dating someone younger, taller, and better-looking than your ex. 

Younger guy (in spirit) and his high school teacher...Oh, brother!

Secretly dating the former student of your younger brother who is is currently an intern in your company. (evil laugh)