'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
Couples' personalities converge over time to make partners more and more similar.
235
Wearing red increases attraction.
30
Two in five people in the world marry their first love.
270
When dragonflies mate, their tails form a love heart.
22
When someone looks at a new love, the neural circuits that are usually associated with social judgment are suppressed.
130
Raj from the Big Bang Theory is married to Miss India.
11
Gary Kremen, founder of match.com, lost his girlfriend to a man she met on match.com.
69