Responses
I think Heesung is 100% sure about that.
He understood that Jjk had feelings for Dan the day he invited him to his apartment, why? He said it Jjk didn't have to do all that, he's scary enough and physicaly too to persuade anyone to not touch his Dan. I think heesung wouldn't tell Dan that Jjk likes him if he wasn't sure.
He will tell Jjk Dan whereabouts maybe to help them (I see him asking for compensation).
i hope blondie doesn't fuck shit up by giving away Dan's location to that horseface