One in five long-term love relationships began with one or both partners being involved with others.
177
Women rate men more attractive if other women are looking and smiling at him.
17
Men fall in love faster than women do.
32
Yawns are more contagious among people with closer relationships.
163
40% of people who are rejected in romantic love slip into clinical depression.
72
Gary Kremen, founder of match.com, lost his girlfriend to a man she met on match.com.
69
Historically, sweat has been an active ingredient in perfume and love potions.
309