What key ingredient in any happy and satisfying sexual relationship takes time to build through a process called uncertainty reduction?

Trust is the  key ingredient in any happy and satisfying sexual relationship takes time to build through a process called uncertainty reduction

Explanation

The Uncertainty Reduction Theory (URT)states that if two individuals or couple need to reduce uncertainty between them then they need to gain information about each other,their relationship,that can be used to predict each others behavior.

this would be a math