Parents receive 1 out of every 5 Valentines.
20
Falling in love raises levels of nerve growth in a person's brain for about a year and can improve their memory.
39
Holding hands with someone you love can alleviate physical pain as well as stress and fear.
26
When you are looking at someone you love, your pupils dilate, they do the same when you are looking at someone you hate.
1k
40% of people who are rejected in romantic love slip into clinical depression.
72
In Korea, there's a man named Lee Jin-gyu who fell in love and married his life-sized Japanese body pillow (called a "dakimakura").
-2
Couples' personalities converge over time to make partners more and more similar.
235
Men fall in love faster than women do.
32