<human>: If you plan to make rude comments about the age difference, move along.

I have a crush on my manager. Have had for nearly a year and a half now. 

He seems very nervous and shy around me, but is quite gregarious with most everyone else. This depresses me and I find myself thinking that if he talks to everyone else, he should talk to me, too. But this is wrong. He is allowed to talk to or not talk to whoever he wants. He doesn't owe me friendship, conversation, or anything else.

Yet I find myself very upset that he won't have a conversation with me, and I'm wondering if it's because I feel he owes me something.

Intellectually I know he doesn't owe me conversation, but why am I upset about it? Can you be upset yet still acknowledge that someone has the right to not talk to you?

Can you condense the text into three sentences or less?
<bot>: Please help me understand that if my crush doesn't want to talk to me, he has the right not to and he doesn't owe me anything.