Dad's Friends 2 (2018)

She's more tempting because you can't have her.

Hyuk-soo's wife passed away 10 years ago and now he lives in a fishing village when his friend's daughter Se-hee comes to visit him. His boring life has just become exciting thanks to Se-hee. Her ex-boyfriend Jong-jin comes to see her, but he only wants his bank book back. She uses Hyuk-soo to make him jealous, and the two fall for each other.