If the heart doesn't feel anything

Kang Si An strokes Little Hae's hair. Little Hae has fallen asleep in his lap after playing for hours. Kyuri is not back yet. He wonders what they are doing right now. He is envious of Young Hwa who can still stay beside her when he can't. He lays down Little Hae on the bed and covers her. At least, he has Little Hae. He has a reason to look forward to the next day.

He hates it that he can't ever look back and think that Little Hae has been conceived out of love instead of his sin against Kyuri, the woman he loves. If it's that difficult for him who is the perpetrator, how difficult it is for the woman who has been the victim?

Even today, he lost his temper when it was him who was at fault. It would have been him by her side if he had been sane that night.

Why did his heart feel betrayed when it's him who betrayed her trust when he heard that she's going to register her marriage?