Why she chose to focus her work and research on female friendships

The metrics used to measure female friendship

“The three affinities"--the ways women find each other and stay together

The things that bring us together, and the things that tear us apart

How to know if a friendship has run its course

“Girl rules”

Big break points for female friendships--college, weddings, babies

The "Mean Girls" theory

Advice on how to maintain friendships