Parents receive 1 out of every 5 Valentines.
20
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
Kissing an infection-free partner is good for your teeth!
141
Speed dating was invented by a Rabbi in 1999.
45
Couples' personalities converge over time to make partners more and more similar.
235
Kissing releases masses of oxytocin, a "love potion" that helps couples bond and feel more attracted to each other.
13
The left ear is more responsive to words of love and emotion whispered into it than the right.
40