A decision made in the midst of high emotions will be the best decision you will regret. Emotions are a part of being human. Sometimes those emotions spin out of control. Things are said and actions are taken that many will come to later regret but your partner won't soon forget.
In the midst of a high emotional moment in your relationship, it is suggested that you do what you can control and that is yourself. I will admit that is easier said than done but you will see the power of doing it as cooler heads prevail.
Having the last say or getting it for the sake of winning is not really winning at all. Not for the sake of hurting or even loosing your mate. Learn how to control your tongue and ask yourself, is my next comment really necessary?