He got mad over a question?

I asked my boyfriend what does being in a relationship mean to him. I was just curious on what he thought.

I asked what I meant to him and he said I was his everything. So when I asked what it meant when you're in a relationship TO HIM.. He thought for a bit. Got mad and said "I don't knowww" with an attitude tone. Told me not to ask such questions. Asked me why I asked him that, to which I said I just wanted to know what he thought, that's it. And he's still mad at me and ignoring me.

I wasn't being rude or pressuring him for an answer or anything..

He got mad over a question?
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