The Reward Theory of Attraction says …

We are most attracted to those who give us maximum rewards at minimum cost to us. And four of the most compelling sources of reward are:

Proximity: Frequent contact predicts closeness.

Similarity: Shared attitudes, interests, values and experiences are rewarding.

Self-disclosure: Intimate sharing builds trust and allows us to know each other.

Physical attractiveness: We find beauty rewarding.

But the Expectancy-Value Theory says we weigh the value of the reward against our expectation of success in a relationship.

Don’t get scared and underestimate your ability to succeed in the relationship of your dreams. It’s your destiny … that’s MY theory!