What did his assistant noticed that he became awkward?

He probably noticed that he got laid lmao

How can he notice that with a glance?

The same way people say someone is glowing, it’s exaggerated bc it’s fiction lol

Glow plus more relaxed than usual I guess, he was all tensed before and the vibe around him was more aggressive but now he's mellow and calm. That's how he could pick up on it, I think, I don't know