You burn 26 calories in a one minute kiss.
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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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One in five long-term love relationships began with one or both partners being involved with others.
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A couple had their wedding rings engraved with a waveform of their own voices saying "I do."
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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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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!)
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In 2012, a Chinese man named Xiao Fan had a dress made out of 9,999 red roses for his girlfriend and then proposed - 9 in China means forever
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