Couples' personalities converge over time to make partners more and more similar.
235
When dragonflies mate, their tails form a love heart.
22
Erotomania is a type of delusion in which the person believes another person is in love with him/her.
38
In Finland, Valentine's Day is called "Ystävänpäivä" which translates into "Friend's day".
4
You burn 26 calories in a one minute kiss.
605
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
One in five long-term love relationships began with one or both partners being involved with others.
177
Sea otters hold hands while sleeping so they don’t drift away from each other.
104