Geonwoo is valid for that. But why are we treating Mr. Heo like some bad guy here? Imagine your best friend for 12 YEARS, the one you never saw as your potential lover because for you he's your BEST FRIEND, confessed to you and left you before you process everything which is kinda shitty move for me. Like sorry if I don't know you like me but you chose to hide it from me. So why am I the bad guy here for not knowing how to feel after the confession? ( ̄へ ̄)