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
Every year around 1 billion Valentine cards are sent. After Christmas it's a single largest seasonal card-sending occasion.
14
When you fall in love, that 'high' feeling is caused by a flood of dopamine that is similar to that of cocaine.
44
Close to 110 million roses (mostly red) will be purchased and delivered around Valentine's Day in the U.S.
88
The left ear is more responsive to words of love and emotion whispered into it than the right.
40
40% of people who are rejected in romantic love slip into clinical depression.
72
There's a love mattress that is specifically designed for couples who sleep on each other's arms.
12
One in five long-term love relationships began with one or both partners being involved with others.
177