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
Kissing releases masses of oxytocin, a "love potion" that helps couples bond and feel more attracted to each other.
13
People are more likely to tilt their heads to the right when kissing instead of the left (65 percent of people go to the right!)
278
According to the New York Times, a study conducted during the 1980's found that men who kiss their wives before leaving for work live longer, get into fewer car accidents, and have a higher income than married men who don't.
14
Holding hands with someone you love can alleviate physical pain as well as stress and fear.
26
Yawns are more contagious among people with closer relationships.
163
When you kiss someone for the first time, you get a spike in the neurotransmitter dopamine, making you crave more.
23