Yawns are more contagious among people with closer relationships.
163
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
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
Men fall in love faster than women do.
32
Kissing releases masses of oxytocin, a "love potion" that helps couples bond and feel more attracted to each other.
13