'X' became symbolic for a kiss because in the middle ages when alot of people were illiterate and they used to sign documents with an X and then kiss it for sincerity.
255
Holding hands with someone you love can alleviate physical pain as well as stress and fear.
26
Ten seconds of hugging a day increases levels of oxytocin, which can reduce blood pressure, thus cutting the risk of heart disease.
26
Kissing an infection-free partner is good for your teeth!
141
Erotomania is a type of delusion in which the person believes another person is in love with him/her.
38
You burn 26 calories in a one minute kiss.
605
Parents receive 1 out of every 5 Valentines.
20
A couple had their wedding rings engraved with a waveform of their own voices saying "I do."
10