Inevitably, anytime we are too vulnerable we feel the need to protect ourselves from further wounds. So we resort to sarcasm, cutting humor, criticism - anything that will keep from exposing the tenderness within. Each partner tends to wait on the initiative of the other for love, only to be disappointed but also confirmed as to the rightness of the accusations made.
Stephen R. Covey (2015). “The Stephen R. Covey Interactive Reader - 4 Books in 1: The 7 Habits of Highly Effective People, First Things First, and the Best of the Most Renowned Leadership Teacher of our Time”, p.162, Mango Media Inc.