When dragonflies mate, their tails form a love heart.
22
Wearing red increases attraction.
30
One in five long-term love relationships began with one or both partners being involved with others.
177
In Korea, if you do not receive any gift on Valentine's day then all the singles go to Korean restaurants and eat black noodles to celebrate (or mourn) their single status.
27
As a rule, 66 percent of people keep their eyes closed while kissing. The rest take pleasure in watching the emotions run the gamut on the faces of their partners.
687
Ten seconds of hugging a day increases levels of oxytocin, which can reduce blood pressure, thus cutting the risk of heart disease.
26
When you are looking at someone you love, your pupils dilate, they do the same when you are looking at someone you hate.
1k
A man's beard grows fastest when he anticipates sex.
239