Brain scans show that people who view photos of a beloved experience an activation of the caudate - the part of the brain involving cravings.
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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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For Valentine's Day 2014, an unnamed man sabotaged a special screening of "Beijing Love Story" at a Shanghai cinema by booking every other seat, subsequently preventing couples from sitting together.
41
Raj from the Big Bang Theory is married to Miss India.
11
In Finland, Valentine's Day is called "Ystävänpäivä" which translates into "Friend's day".
4
If you mouth the word "colorful" to someone, it looks like you are saying "I love you".
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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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The left ear is more responsive to words of love and emotion whispered into it than the right.
40