When you fall in love, that 'high' feeling is caused by a flood of dopamine that is similar to that of cocaine.
44
When dragonflies mate, their tails form a love heart.
22
Parents receive 1 out of every 5 Valentines.
20
A man's beard grows fastest when he anticipates sex.
239
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.
25
Ten seconds of hugging a day increases levels of oxytocin, which can reduce blood pressure, thus cutting the risk of heart disease.
26
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
16
A couple had their wedding rings engraved with a waveform of their own voices saying "I do."
10