Does she have a life outside of you?

Crazy: You've spent three days with her this week, and you decide you need a night out with guys. When you spring the news on her, she pouts about how you never spend time together and accuses you of liking your friends more than her. Eventually, she makes such a big deal about it that you invite her along, and proceed to get grilled by your boys all night.

When her friends invite her out, she opts to spend time with you instead. It gets to the point where you begin to doubt she has any strong female friendships and you get the sense that her entire identity revolves around your relationship.

Keeper: A woman who is emotionally stable recognizes the importance of independence in a relationship. She is understanding when you decide to go beer-guzzling with your boys, and often encourages you to take time to yourself. Likewise, she enjoys having time to herself and spending time with her girlfriends. She loves hanging out with you, but she has tight bonds with other women that she is not willing to sacrifice.