It erodes the very foundation of a relationship. It is a time bomb that will eventually destroy the relationship. Telling a lie weakens the already weak self-esteem of the liar. Because lies are negative communications. Dishonesty is a protective device.
Lies are protective devices.
We think we are protecting the other person when we lie, but in reality we are protecting ourselves. When we lie, we set the time bomb ticking, and the explosion will rip through the delicate fabric we attempt to weave between ourselves and someone else. There is no real love without trust. Because communication finally broke down beyond the point of repair. The overt lie is usually spoken.