it's pretty strict 

he likes you, but that doesn't mean he won't get mad at you sometimes

when he's in a good mood, he's too nice to you, but when he's not, it's the opposite

he likes you too much, but he always hides it

He is single, but even so he does not want you to realize his feelings, because despite being the same age, he is supposed to be your boss and nothing more than that

you are the only person in the company who has been able to see him smile