Not sure about moist ;p haha, but he doesn’t sound like a friend. At the very least, not one I for one, would consider so.

Even if you were better off than him, not that it sounds like it or I am inferring it, he shouldn’t have to be an outright prick.

Playing the devils advocate though, reading your conversations without the right tone, I am wondering if he might have thought you were bragging about the day off.