If you put yourself on his shoes and try to understand it thoroughly, you'll understand. For that years he tried to search for yoon not knowing if yoon is alive or not, everyday must have been a thorn to him... Imagine the person you love so hard, you didn't know what happened to him and you don't have any clues, that's really painful. He needs someone who can divert his attention or just to lessen the pain so he will not go deeper into the pain he's feeling everyday. 5 yrs might be short but to a person who lost someone they truly love, every single day feels like a year...
Everyone has their own tragedy. Even the current partner of taejoo... But I will never try to understand the perception of the other male lead. He's a dick.
WHY NOT JUST TELL TO LOUIS THAT HE'S THE PERSON YOU LOVE! FUCK ALL OF THESE CHARACTERS THAT DOESN'T KNOW HOW TO ASK AND HOW TO ANSWER. Gahd all of this sht is making me mad. Maetel being a fcker too goodness