'X' became symbolic for a kiss because in the middle ages when alot of people were illiterate and they used to sign documents with an X and then kiss it for sincerity.
255
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
In 2012, a Chinese man named Xiao Fan had a dress made out of 9,999 red roses for his girlfriend and then proposed - 9 in China means forever
16
It's possible to die from a broken heart; it's called Stress Cardiomyopathy.
165
There's a love mattress that is specifically designed for couples who sleep on each other's arms.
12
When someone looks at a new love, the neural circuits that are usually associated with social judgment are suppressed.
130
Couples' personalities converge over time to make partners more and more similar.
235
One in five long-term love relationships began with one or both partners being involved with others.
177