Someone who ruins a relationship deliberately, they have an astounding level of patience, confidence and consistency. When someone has broke up with their partner and it's neither his or her fault, it's likely that they have been the victim of a relationship defacer.
Person 1: Why did you and Mel split up? You seemed really happy together.
Person 2: A relationship defacer came and ruined everything.
Person 1: I'm sorry.
by Mc Noggin August 10, 2017
Get the relationship defacer mug.