You must remember this,With all due respect to Mr. Hupfield, a kiss is NEVER "just" a kiss. This single behavior, among mammals, involves one creature pressing their lips against another creature or object and is always symbolic of something more intimate.
a kiss is just a kiss,
a sigh is just a sigh.
"As Time Goes By"
written by Herman Hupfield in 1931
According to wikipedia ...
express sentiments of love, passion, romance, sexual attraction, sexual activity, sexual arousal, affection, respect, greeting, friendship, peace and good luck, among many others. In some situations a kiss is a ritual, formal or symbolic gesture indicating devotion, respect, or sacramentThe function of this blog will be to explore all experiences and phenomena related to kissing. The transcultural significance, the physiology, the risks and the rewards of what is affectionately referred to as "lipwork." FYI, lipwork is not to be confused with "lip service," that is another matter altogether.