40% of people who are rejected in romantic love slip into clinical depression.
72
Intelligent men tend to be more sexually faithful.
31
When you kiss someone for the first time, you get a spike in the neurotransmitter dopamine, making you crave more.
23
Yawns are more contagious among people with closer relationships.
163
Women rate men more attractive if other women are looking and smiling at him.
17
Wearing red increases attraction.
30
A man is more likely to get a woman's phone number if he is accompanied by a dog.
20
Gary Kremen, founder of match.com, lost his girlfriend to a man she met on match.com.
69