Yawns are more contagious among people with closer relationships.
163
Intelligent men tend to be more sexually faithful.
31
40% of people who are rejected in romantic love slip into clinical depression.
72
Anuptaphobia is the fear of staying single.
11
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
Historically, sweat has been an active ingredient in perfume and love potions.
309
There's a love mattress that is specifically designed for couples who sleep on each other's arms.
12