Actually, no... I have fights with my wife, but I have fights with almost anybody I'm close to. It's human nature.
The way I look at it is like this: If I have to fight with anybody, who would I want it to be with? The answer is my wife, because the making up is great
No fights, no passion. If a person can anger you to the point where their opinion still matters to you, than you are still doing alright ;)