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
A poll has found that computer 'nerds' make the best lovers, with 82 percent of IT geeks claiming they put their partner's pleasure above their own.
464
When you fall in love, that 'high' feeling is caused by a flood of dopamine that is similar to that of cocaine.
44
Couples' personalities converge over time to make partners more and more similar.
235
When someone looks at a new love, the neural circuits that are usually associated with social judgment are suppressed.
130
Every year around 1 billion Valentine cards are sent. After Christmas it's a single largest seasonal card-sending occasion.
14
In Finland, Valentine's Day is called "Ystävänpäivä" which translates into "Friend's day".
4