Yawns are more contagious among people with closer relationships.
163
Historically, sweat has been an active ingredient in perfume and love potions.
309
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
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
Women rate men more attractive if other women are looking and smiling at him.
17
In 2012, a Chinese man named Xiao Fan had a dress made out of 9,999 red roses for his girlfriend and then proposed - 9 in China means forever
16
Wearing red increases attraction.
30