If you share three basic compatibilities.

Angelina Jolie and Brad Pitt. Kevin Winter / Getty

According to the work of Canadian psychologist Eric Berne, the best-matched couples vibe on three different levels.

His popular books about the model became best sellers, namely "The Games People Play." Drawing somewhat on Sigmund Freud, his theory argued that every person has three "ego states":

• The parent: What you've been taught

• The child: What you have felt

• The adult: What you have learned

When two people are really compatible, they connect along each tier. Couples therapist Peter Pearson gave us a few questions for figuring out compatibility at each level:

• The parent: Do you have similar values and beliefs about the world?

• The child: Do you have fun together? Can you be spontaneous? Do you think your partner's hot? Do you like to travel together?

• The adult: Does each person think the other is bright? Are you good at solving problems together?