There's a love mattress that is specifically designed for couples who sleep on each other's arms.
12
Every year around 1 billion Valentine cards are sent. After Christmas it's a single largest seasonal card-sending occasion.
14
When a male gentoo penguin "falls in love" with a female penguin, he searches the entire beach to find the perfect pebble to present to her.
25
Wearing red increases attraction.
30
In Finland, Valentine's Day is called "Ystävänpäivä" which translates into "Friend's day".
4
8 out of 10 people think that the first kiss indicates how the rest of the relationship will be.
212
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 someone looks at a new love, the neural circuits that are usually associated with social judgment are suppressed.
130