Excellent post by Roissy. (HT: Ray Sawhill)
1. She exercised and ate healthily before she met you, and she continues to do so after you start dating her seriously.
2. She rarely disparages her girl friends or snipes about their flaws behind their backs.
3. She has not had many past lovers, and she is not a constitutional flirt who will invite the temptation of more lovers.
Read the whole thing.
