How do y'all think he found out that the girl was actually a boy?!(￣∇￣")

I bet he knows because there were closeup shots of hakyung's chest area and hands...... (=・ω・=)

I have a feeling that he might’ve known from the start, since the first time they met (if I remember correctly) he was asleep on the couch and woke up to the other guy (I’m not good with names) looking at him. Either that or he at least thought he looked masculine when they first met, but along the way, found out other things that confirmed he was a man.