9. Getting insanely jealous
A little jealousy is okay but if you flip out every time there is a woman in his vicinity then you're making a mistake. It is natural for men to check out other women, as long as it's just a fleeing look there is no need to get angry about it. Men love women who are confident and secure so don't be a jealous, insecure, possessive girlfriend. This will make him think you don't trust him, cause fights and bitterness. If you give him a happy, well-balanced relationship you'll never be insecure about it. Don't let jealousy kill your relationship.