Falling in love raises levels of nerve growth in a person's brain for about a year and can improve their memory.
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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.
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The left ear is more responsive to words of love and emotion whispered into it than the right.
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When someone looks at a new love, the neural circuits that are usually associated with social judgment are suppressed.
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Erotomania is a type of delusion in which the person believes another person is in love with him/her.
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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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If you mouth the word "colorful" to someone, it looks like you are saying "I love you".
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Every year around 1 billion Valentine cards are sent. After Christmas it's a single largest seasonal card-sending occasion.
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