You burn 26 calories in a one minute kiss.
605
When you fall in love, that 'high' feeling is caused by a flood of dopamine that is similar to that of cocaine.
44
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
Every year around 1 billion Valentine cards are sent. After Christmas it's a single largest seasonal card-sending occasion.
14
Parents receive 1 out of every 5 Valentines.
20
Brain scans show that people who view photos of a beloved experience an activation of the caudate - the part of the brain involving cravings.
103
Couples' personalities converge over time to make partners more and more similar.
235
In Korea, there's a man named Lee Jin-gyu who fell in love and married his life-sized Japanese body pillow (called a "dakimakura").
-2