When you fall in love, that 'high' feeling is caused by a flood of dopamine that is similar to that of cocaine.
44
'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
Cuddling (or other ‘love’ acts) helps to heal physical wounds faster due to the release of Oxytocin which is proven to reduce swelling.
22
In Finland, Valentine's Day is called "Ystävänpäivä" which translates into "Friend's day".
4
Kissing an infection-free partner is good for your teeth!
141
Erotomania is a type of delusion in which the person believes another person is in love with him/her.
38
In 1999, a fisherman found a love letter in a bottle from a soldier in WWI. He returned said letter to the now deceased widows 86 year old daughter.
27
Men fall in love faster than women do.
32