Youngho decided to use his exposed identity in order to get what he wanted.
Edward could not have introduced him to Tracy with bad intentions but it was true that he made a critical mistake as an agent. It was his love for his people that blinded his eyes. The reason for Edward's relocation to Panama was his nationalism as well.
He was not going to blame Edward for this since he liked him very much. To Edward, Tracy must have seemed like a wolf in sheep's clothing and that must be the reason that he connected her to Youngho.
What happened already happened and there was no way that he could turn back time. All he could do now was to take advantage of Tracy. Then, he should draw the line after this deal, letting her know that if she asks more from him, their relationship would get worse. She should have that much wit.
If she keeps her tenacious hold on Youngho, then he should come up with another way to break the relationship with her. For now, she trusted Youngho, so he was ready to
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