Women rate men more attractive if other women are looking and smiling at him.
17
When you kiss someone for the first time, you get a spike in the neurotransmitter dopamine, making you crave more.
23
Intelligent men tend to be more sexually faithful.
31
One in five long-term love relationships began with one or both partners being involved with others.
177
Yawns are more contagious among people with closer relationships.
163
Women who play video games tend to have more sex and be happier with their relationships than those who don’t.
18
Wearing red increases attraction.
30