Did you know the couples researcher, John Gottman, found out that when you are upset and your heartbeat goes over 100 beats per minute, you stop being rational?
That means it is pointless to continue arguing because you're not thinking straight.
That's not very high. Check your heart rate next time you're upset. To learn what you should do when you're in an argument with someone you love and you've reached an impasse, read this article: Bypass the Impasse.