Rule #7: Meet her friends.
Did we just say that people tend to make friends with people who are like them? Use this to your advantage. Meet her friends; if there’s about their values or behavior that you don’t like, it’s reasonable to wonder what she’s like when she’s not with you.
In general, the more connected you are to her life, the less likely you are to be blindsided. Don’t believe everything you hear and don’t go looking for gossip, but it wouldn’t be the first time that a man found out his partner’s secrets from one her friends, accidentally or otherwise.
Rule #8: Date more than one woman–until you commit.
If you’re looking for a serious relationship, date multiple women at the same time. I know this contradicts conventional wisdom, but it’s incredibly important.
Everyone has times when they want to feel close to someone, feel romantic, feel connected, and so on. If there’s only one person in your life who you can apply those feelings to, you risk coming off as clingy or needy–without even knowing you’re doing it. It’s something I’ve seen a thousand times.
Date multiple women until you find the one. Then you’re choosing to be with her, instead of choosing not to be alone.