It is one thing for Gwi-nam to know that you like him. However, to stand face to face with you in the hallway during the apocalypse, him not being the same he was half-bie half half human and half zombie. Your name tag still in his hand as when you admit that you have feelings for him. He didn't know what to do. He was aware that you were waiting for him to do something like chase and bite him but he didn't know what to say or do. Gwi-nam knows he should say something but he was occupied with the weird fluttering sensation in his belly and the way his heart was beating wildly in his chest.

Those two things he shouldn't get this feeling from a guy... right?

Sure Gwi-nam would admit that he had looked at guys before but more in admiration and none of them ever gave him this feeling before. So why does this feeling only happens when he's around you? What is it about you that makes him feel like this? And the answer to those questions scared him. And Gwin-nam wasn't sure if he was ready for that answer.

So he just turned around.