Gu Yu is a scum gong.
After putting his lover through all the usual plot beats, from cruel words and emotional abuse to his lover running away while pregnant and the agonizing pursuit to win them back, he finally "gets the beauty in his arms." Unfortunately, his lover still keeps him at a distance. Just as he's agonizing over it,
he realizes something.
He welcomes death.
When he wakes up again, he's back on the day he successfully won his lover back.
Major warning: The love interest changes; the ex-husband gets the worst of the angst, with secondary angst for the friends and family and the ungrateful little brat.
The gong is weak in bed, but there's always someone stronger.
The shou dotes on the gong.
Theme: Don't be a love-struck fool