Sea otters hold hands while sleeping so they don’t drift away from each other.
104
Kissing an infection-free partner is good for your teeth!
141
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
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
Couples' personalities converge over time to make partners more and more similar.
235
In Korea, if you do not receive any gift on Valentine's day then all the singles go to Korean restaurants and eat black noodles to celebrate (or mourn) their single status.
28
Two in five people in the world marry their first love.
270