Think of each guy you meet as belonging to someone else, because ultimately they will belong to someone.
There are hundreds of millions, even billions, of men in the world. You will marry only one. The rest belong to others.
You need to think of each man as already married- and yourself as already married. Interact with a single man in the same way you would interact with a married man. In your conversations and actions with men, take your example from the married women at church in the way they talk to and act with men other than their husbands.
Even in courtship, keep this in mind, because no one belongs to you until you are actually married.
I'm blessed with an amazing and wise mom (and dad!). I love you both!