When my 3-year-old is in a good mood, she asks for a “true love kiss.” She first heard the phrase during a family viewing of Shrek, but it has since become her signal that she is craving affection.

I am happily married to my husband of 16 years. I have known my in-laws since high school and they are lovely, kind people. In the past five to six years, my father-in-law has started adding a kiss ...

A new study looks at how the mouth-on-mouth smooch came into being, and concludes that Neanderthals also kissed.