Yawns are more contagious among people with closer relationships.
163
One in five long-term love relationships began with one or both partners being involved with others.
177
Wearing red increases attraction.
30
Men fall in love faster than women do.
32
It's possible to die from a broken heart; it's called Stress Cardiomyopathy.
165
Women who play video games tend to have more sex and be happier with their relationships than those who don’t.
18
40% of people who are rejected in romantic love slip into clinical depression.
72