The million dollar question: What is the secret to finding a healthy and enduring relationship? What criteria should I be looking for? How can I know if someone is compatible with me? What defines compatibility? How can I identify my true soulmate?
Here are four primary types of compatibility, and all of them are necessary for healthy love. However, the first three are subject to change, while the fourth type of compatibility is the one that truly cements relationships for the long haul — it is the eternal element that keeps couples together when their looks and interests change.