Historically, sweat has been an active ingredient in perfume and love potions.
309
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
Couples' personalities converge over time to make partners more and more similar.
235
There's a love mattress that is specifically designed for couples who sleep on each other's arms.
12
One in five long-term love relationships began with one or both partners being involved with others.
177
People are more likely to tilt their heads to the right when kissing instead of the left (65 percent of people go to the right!)
278
8 out of 10 people think that the first kiss indicates how the rest of the relationship will be.
212
Wearing red increases attraction.
30