MSN's relationship expert Dr. Pam Spurr flags up the pros and cons of your couple-type.

Relationship research repeatedly shows we're drawn to particular partners because they fulfil some sort of family 'script' from childhood.

You learn how to relate to others by watching your parents relate to each other. And if someone you meet makes you feel like you've "known them all your life" you can bet they fulfil a 'role' you're familiar with - probably dating back to your childhood.

There are many variations of couple-types but here are key ones from the world of celebrities that you might recognise in your own relationships.