Holding hands with someone you love can alleviate physical pain as well as stress and fear.
26
Men who kiss their wives in the morning live five years longer than those who don't.
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When dragonflies mate, their tails form a love heart.
22
Men fall in love faster than women do.
32
Kissing releases masses of oxytocin, a "love potion" that helps couples bond and feel more attracted to each other.
13
Historically, sweat has been an active ingredient in perfume and love potions.
309
Approximately 141 million Valentine's Day cards are exchanged worldwide every year.
104
For Valentine's Day 2014, an unnamed man sabotaged a special screening of "Beijing Love Story" at a Shanghai cinema by booking every other seat, subsequently preventing couples from sitting together.
41