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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A man's beard grows fastest when he anticipates sex.
239
Sea otters hold hands while sleeping so they don’t drift away from each other.
104
Couples' personalities converge over time to make partners more and more similar.
235
Men fall in love faster than women do.
32
One in five long-term love relationships began with one or both partners being involved with others.
177
Holding hands with someone you love can alleviate physical pain as well as stress and fear.
26
Approximately 141 million Valentine's Day cards are exchanged worldwide every year.
104