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
Yawns are more contagious among people with closer relationships.
163
Wearing red increases attraction.
30
Anuptaphobia is the fear of staying single.
11
When you kiss someone for the first time, you get a spike in the neurotransmitter dopamine, making you crave more.
23
One in five long-term love relationships began with one or both partners being involved with others.
177