Trust is essential in a marriage or romantic relationship.
It is impossible to have a close, intimate relationship when people do not trust their partners. Trust involves knowing that a partner has your best interest at heart. It is hard to feel safe and secure when you are involved with someone who would betray your trust.
Not only is trust important, but it also influences our deceptive behavior. People have a fundamental need to "get even" – it is called "reciprocity."
The value that trust has when it comes to a relationship is really high and shouldn't be taken for granted cause it could make the relationship really last for a long time.