Escorting her himself

"Is that your problem now?" He probed with a smile.

"If you think of it as a problem, you are free. But I must see the credit alert from my bank before I leave here." Ji-Soo said, insisting that he refunded her the money he owed.

She didn't trust him one bit therefore, she was forced to take this measure.

Watching the never-changing expression on her face, he thought to himself, 'What if I decide to keep here till it's time to clock off work?' 

Since he liked her and had the intention of pursuing her, he could do something like that just she could stay in his line of sight. But since she wasn't aware, he couldn't blame her for giving him such an idea.

"All right, I will wire the money right away." 

Having decided to not waste their time since they both have some work to take care of, he stood up and walked over to his desk to pick up his phone before returning to her side.