Men fall in love faster than women do.
32
Falling in love raises levels of nerve growth in a person's brain for about a year and can improve their memory.
39
Studies show that the risk of a “secret love” being revealed heightens romantic feelings for the partners, thanks to increased levels of phenylethylamine (PEA).
99
Couples' personalities converge over time to make partners more and more similar.
235
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
In medieval Italy, if a man was caught kissing a woman in public, he had to marry her whether he liked it or not.
456
When dragonflies mate, their tails form a love heart.
22