While there are still couples who wait for a deep level of commitment before having sex, today it's far more common for two people to explore their sexual compatibility before making long-term plans together.
The study involves 2,035 married individuals who participated in a popular online marital assessment called "RELATE." From the assessment's database, researchers selected a sample designed to match the demographics of the married American population. The extensive questionnaire includes the question "When did you become sexual in this relationship?"
Relationship stability was rated 22% higher
Relationship satisfaction was rated 20% higher
Sexual quality of the relationship was rated 15% better
Communication was rated 12% better