We learn the most primitive and important things from our parents, from how to walk and talk to how to love and treat others. So, it’s no surprise that we learn how to be in a relationship from watching the relationship our parents have, either with each other or another significant other. That’s why observing the relationship between your S.O. and his or her parents can be incredibly insightful—it’s like looking into a crystal ball to see how your relationship might pan out. Here are some things relationship experts say you can learn about your partner when meeting the parents.