Factualistic
Someone who doesn’t just tell the truth, they yell the truth at you until you beg for mercy.
My brother is factualistic. He told me 10 facts about dogs before I could even say 'hello.'
My boss is factualistic. She gave me a lecture on time management during my lunch break.
My crush is factualistic. They told me the exact number of calories in my snack before I could finish it.