This is episode 48 of 59 of My Husband Is Actually a CEO. Play it below, then continue straight into the next episode — the whole season is free and needs no account.
The closing stretch of the season, where the arc pays off.
On her wedding day, Selena Lane is betrayed by her fiancé and half-sister. She impulsively marries passer-by driver Robert to escape. Unbeknownst to her, Robert is actually Accord Group's CEO hiding his identity, until his brother finally tracks him down.