Red flag that made you leave the relationship?

Mine was when he had a male friend come over he made me stay quiet and stay in the other room. If I needed to come out for whatever reason, text or call his phone

A question answered- He wasn’t gay but very possessive and jealous. Even if his brother came around. I used to have to walk with my head down if we were outside and a man walked by. If he was greeted by a friend I was to walk off.