7. You upload photos of the two of you on Facebook
“Well, if she’s posting it she’s probably not cheating, but…” Some guys feel uneasy when they find photos that show how close their girlfriends are with someone else. You can’t help it if a friend tags you in photos without your consent, but if your boyfriend is the jealous type, it might be best to make sure no one takes photos of just the two of you in the first place.