Arguing as an expression of loving

I read an article on "5 Habits of Successful Couples" by Dr. Pepper Schwartz (AARP, March 15, 2011). The part that caught my eye in the keys was the one on how loving couples argue:

"They know how to fight fairly. It's not that happy couples never argue. Most couples have disagreements. But in a mature relationship, power isn't defined by winning an argument or getting one's way. True power comes from knowing how to discuss differences fully and honestly. If you demean your partner when you disagree, and if, at the end of an argument, you do not feel stronger and more intimate than you did before you started — you are not building a stronger, more loving relationship.Successful couples know how to argue with class and dignity. They may disagree, but in the end, they end up understanding — and respecting — their differences."

The part I thought was the best was: "If, at the end of an argument, you do not feel stronger and more intimate than you did before you started - you are not building a stronger, more loving relationship." Knowing how to disagree, is a part of knowing how to love. It even becomes a way to express your love and extend your love.