I got a little goosebumps when ML's friend talked about Cupid's last metamorphosis. He seemed afraid because he knew the ending of Cupid, who didn't go through the last metamorphosis. In the first episode, they fired an iron arrow to save ML, but they failed because ML ran to save FL. I think what they're worried about will happen soon when ML opens up to FL. And I think ML knows the ending but decided to open up to her because he loves her so much.
When the girl appeared while ML was lying in bed, he was not surprised at all. This scene shows how often ML has had the same dream over the past 29 years. When the girl asks him if he has any regrets, his eyes slowly burst into tears, revealing calm yet deep sadness and regret. ML has the most emotionally infectious eyes of any actor I have ever met while watching Korean dramas. And he performs a wonderful romantic comedy with a gender twist with FL in the next scene. I love these main leads so much.
I think what they're worried about will happen soon when ML opens up to FL. And I think ML knows the ending but decided to open up to her because he loves her so much.