When you are looking at someone you love, your pupils dilate, they do the same when you are looking at someone you hate.
1k
Kissing releases masses of oxytocin, a "love potion" that helps couples bond and feel more attracted to each other.
13
Brain scans show that people who view photos of a beloved experience an activation of the caudate - the part of the brain involving cravings.
103
Falling in love raises levels of nerve growth in a person's brain for about a year and can improve their memory.
39
Raj from the Big Bang Theory is married to Miss India.
11
8 out of 10 people think that the first kiss indicates how the rest of the relationship will be.
212
In Finland, Valentine's Day is called "Ystävänpäivä" which translates into "Friend's day".
4