Couples' personalities converge over time to make partners more and more similar.
235
Historically, sweat has been an active ingredient in perfume and love potions.
309
A Korean man called Lee Jin-gyu fell in love with his large, huggable pillow and married it.
29
Approximately 141 million Valentine's Day cards are exchanged worldwide every year.
104
There's a love mattress that is specifically designed for couples who sleep on each other's arms.
12
Two in five people in the world marry their first love.
270
The left ear is more responsive to words of love and emotion whispered into it than the right.
40
Men who kiss their wives in the morning live five years longer than those who don't.
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