In the time you've been working together, he definitely had developed a crush on you and so did you. But he was the one hiding it, because of the problem: the age

People would assume that he was the one who was older, but you were, even if only a few years.

"You know it wouldn't be a problem for me." you sit on the table and look at him "You can't be older than me..." he says and looks away "Why, explain it to me." he sighs "Even someone older doesn’t deserve me..“