When a male gentoo penguin "falls in love" with a female penguin, he searches the entire beach to find the perfect pebble to present to her.
25
Erotomania is a type of delusion in which the person believes another person is in love with him/her.
38
Holding hands with someone you love can alleviate physical pain as well as stress and fear.
26
In Finland, Valentine's Day is called "Ystävänpäivä" which translates into "Friend's day".
4
Ten seconds of hugging a day increases levels of oxytocin, which can reduce blood pressure, thus cutting the risk of heart disease.
26
When dragonflies mate, their tails form a love heart.
22
When you fall in love, that 'high' feeling is caused by a flood of dopamine that is similar to that of cocaine.
44