They say that the four essential virtues of a successful relationship are honesty, trust, respect, and communication. Redditors mamba_79 and balchynz made these so we can just gonna focus on that first virtue here...
[via: Reddit]
"A fallacy in which we make bad decisions for the future based upon the past emotional or financial investment."1. "I've already spent 4 years in a relationship with my girlfriend, so I should keep trying to fix things between us because we have so much history together, even though we've grown into two separate, incompatible people."