yes, at a certain point he knew (can't remember when tho)
I felt like it was probably when MC got drunk at the hotel because the next morning, the ML started to act weird like he was deeply stressed about something (my theory is that he discovered MC was a guy somehow) and the way he kissed MC after a long quiet drive home like he wanted to confirm something also made me think that he was probably trying to test his feelings whether he still like MC even after knowing he was a man.
I'm not sure if you're talking about the present or the past tbh T-T I can't rlly remeber what exactly happend cuz I read it a while back. And because at both times he needed to find out xd But I think you're talking about the present, and I also think that's about how it was.
I was talking about the past when MC was still pretending to be a girl. ML was still acting very lovingly after bringing MC to the room, but the next morning, he just became... stressed out and wouldn't even look at the MC or talk to him most of the drive home. That's when I figured something was up and guessed he found out and was trying to figure out his feelings.
ahh yes I remember, yea that's pretty much it xd
oh man i feel si bad :( he was genuinely grieving. did he know MC was a man the whole time?