Responses

Because he was too embarrassed to say yes.

There was no rape

Hyesung always says noooo.
The biggest question is why did he marry Dojin.

Nope. He likes Dojin and wants to be with him.. but he is just extreme tsundere who can't lower himself to admit he wants sex.
Where's the rape other people our talking about?
Anyway, I'm excited for the future chapters... Please let Dojin have the day. It's time for Hyesung to get anxious, jealous, etc. Don't be the first one to bow down this timw, Dojin. Pleeeeeaaaase