This is how it usually happens. Some older man is unhappy in his marriage and meets a jolly young sweetheart in which he rediscovers his own youth. He dumps his old family and starts living with his new girlfriend. At that point problems araise.
The Magic of Ordinary Days
2005
Home by Spring
2018
Prescription for Love
2019
A Valentine's Match
2020
Home for Christmas Day
2017
The Hunchback
1997
Love Finds You in Valentine
2016
Not Easily Broken
2009
Borrowed Hearts
Northanger Abbey
2007