Scary Partner

My partner & I love to have sex , we do it often , but he’s not my relationship partner, we’re both single & just hookup. TMI , but when he’s stroking me I usually just look at his strokes , one day it was feeling really good (sorry for tmi again) & I decided to look at his face. He was staring right into my face & eyes, it was fine for all of 2.5 seconds then he started to look like Satan to me😯 his whole face was hard to keep looking at & it made me uncomfortable, I couldn’t even enjoy it anymore because of that, when it was over he asked how it was & I just told him it was good & went home , I don’t know how to feel about this☹️ Maybe I’m overthinking things ...