Historically, sweat has been an active ingredient in perfume and love potions.
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As a rule, 66 percent of people keep their eyes closed while kissing. The rest take pleasure in watching the emotions run the gamut on the faces of their partners.
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One in five long-term love relationships began with one or both partners being involved with others.
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When you are looking at someone you love, your pupils dilate, they do the same when you are looking at someone you hate.
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Sea otters hold hands while sleeping so they don’t drift away from each other.
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Kissing an infection-free partner is good for your teeth!
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Every year around 1 billion Valentine cards are sent. After Christmas it's a single largest seasonal card-sending occasion.
14
Men who kiss their wives in the morning live five years longer than those who don't.
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