I learned something today when arguing with my girlfriend, Is it just better to say your wrong even if your right to make peace or just arguements in general? It seems its human nature to defend oneself from criticism, accusations, or exploited faults.

I learned that a long time ago. But it is a good lesson to learn.
Like they say, you can't live with them and you can't live without them.

Wait till you get married, it gets far worse.

Pick your fights, if you know it's not going to be anything more then a nothing fight then avoid it, if it's regarding something that effects her, you or both then try to talk to her and try to de-esculate the situation, and explain to her that you don't want to fight about it, but when she is ready to calm down you guys can discuss it. I'm hot headed and my boyfriend realizes this too so he does that, he lets me let off my steam my own way and when I am calm I go to him and tell him that I am ready to talk. It helps alot, and it's easier to get points across when your mind isn't fogged with anger

Is it better to lie and just agree to keep the peace? Not if you want a good, secure relationship. Women are notoriously quick to see an untruth - whether said with "good intentions" or not. Most people, women in particular, want to be heard, want to explain what they feel and think and why. They don't necessarily want a solution to the problem or whatever they are discussing. So try this: first, just listen without interruption, just hmm..or reflect back what she's saying "so you think..." or "so you feel..." THEN give your opinion.That way she will feel you are hearing what she's saying, thinking about it, and have an opinion about it. Trust me, it will work.

If you don't even know what to do, no wonder she has you by the short hairs.

I used to argue, then fume. I don't have the energy to win every argument anymore. Spare your energy, but don't let anyone walk all over you!