It was a manipulation tactic. Just like how the ML manipulatively suggested that the MC try doing “it” with him while the latter was basically wasted (and the ML wasn’t), the ML lied (in a manipulative way) to get MC back into bed with him. It’s a suck-ass seme and naïve bottom trope again, and yet I’m still reading it (for now). Hopefully the ML will tell the truth and apologize, but I doubt it. ( ̄へ ̄)

Jeong-yoon (ML) Is the one who asked and suggest Hyunsoo(MC) to try it on just to know that he get hard so why jeong yoon said to mc is the one who asked for it at first