Too often, men and women in relationships make the mistake of believing that never fighting is a good thing - the ultimate symbol of a great relationship. Wake-up call: not fighting in a relationship is actually bad news.
First of all, let me clarify that I use fighting in this context interchangeably with arguing. True fighting - hitting, abuse of any kind, and so on - should be strictly prohibited in your or any other relationship. But a little arguing once in a while is normal as two individuals with different personalities try to navigate their way through a wide range of situations that may test each other's nerves.
Here's the rule: Don't fight too much, and don't fight too little. And when you fight, make sure that you fight fair. This means no name-calling and no use of absolutist terms (e.g., "you NEVER..., you ALWAYS...").
In the end, you should learn how to be able to express your frustration and anger toward your partner, while simultaneously rememebering that you still love them. In order to hold onto both at the same time, remember to edit yourself when you're expressing your frustration so that you can be sure that you are still showing your overall love and respect for your partner.