It's better to speak your mind and agree to disagree than to be her little "yes man."
Don't pick fights, but if you have an opinion, SPEAK ON IT. The last thing you want to do is be the guy who does everything in his power to avoid conflict--all this will do is make her resent you. It's like you're afraid of her. In her mind she thinks, "If he's afraid of me, or can't handle me, how can he protect me from anything?"
When it gets to this point your woman will start picking at you and testing you to see how you respond. That's a bad place to be in. A little healthy conflict means there is energy in your relationship. Energy can be a good thing depending on how you use it. Judah touched on this a little earlier with: Let's Build: The flow of energy.
Standing your ground in the midst of conflict can create admiration, because she knows you're not a punk. That energy from the conflict, mixed with admiration, or PQ, can lead to, you guessed it, make up sex.
Now bad energy can screw you over in a relationship if you let the balance fall out of whack. I'll touch on that in a post tomorrow. Til then, ya'll be good.