I read raws and i don't think Seungchan didn't and won't cheat on Hyesung. You're so dramatic omfg. He really did everything for Hyesung and sacrifice things and then they're finally together I'm sure that he won't do that, maybe the third party could be a pain in ass but nothing much.
Guys calm down, he is so confused with his feelings and just trying to understand it. I'm sure that he couldn't do this to Nakyum. That's his method i think, it's weird but let's wait
THAR WAS THE BEST CHAPTER SO FAR OMG IM FUCKIN SCREAMINNNNN AAAAAAAAAAAA (╯°Д °)╯╧╧