5. You dislike the same things he does.
“Both she and I can’t stand the smell of cigarette smoke. It’s a small thing, but it’s one less thing we have to worry about when we’re together,” describes a man in his late 20s. People tend to focus on things they like, but forget to cross-check the things they loathe. If he happens to share information on what he doesn’t feel comfortable with, take note, because this may be something you’re compatible with.