What you sure do is do that to a guy you guys BOTH KNOW, if he’s pissed about it, he’s cheating. If he does something that he would be mad about if you’re doing, he’s cheating reply
There's been a lot of questioning in whether or not Killing Stalking is a BL, I would say yes. There are many different types of BL and it doesn't have to be a romance BL. I would say its more a psychological thriller BL. Because Yoonhum and Sangwoo do have sexual relations with each other and are most likely love interests in the story