Responses
His definition of love is twisted . By full control he means Yiseon's whole existence should be for him. He should become his core - centre of activity.
Dude's quite possesive actually.
I hope he doesn't just smile and pretend to be find just to go and try to commit suicide when everyone's guard is down. No one can help him if he doesn't seek help for himself unfortunately. And that means he definitely shouldn't lie about his psychological state.
Btw, what do you think was it that Hyeon also wants? His....Heart? Affection? Love? Attention? Trust?
No matter. The guy is smitten and just doesn't know it yet.