Women rate men more attractive if other women are looking and smiling at him.
17
Holding hands with someone you love can alleviate physical pain as well as stress and fear.
26
Kissing releases masses of oxytocin, a "love potion" that helps couples bond and feel more attracted to each other.
13
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
Men fall in love faster than women do.
32
Intelligent men tend to be more sexually faithful.
31