KISS
Illustration of the kissing procedure by showing the mimic part of the process
Used to express feelings without an erotic element. Can be expressive of love, bringing a message of loyal affection, gratitude, compassion, sympathy, intense joy, and profound sorrow
Non-sexual, friends and close acquaintances kiss commonly offer reciprocal moves in the air near the cheek, with the cheeks touching or not
Is a stylized image of a human face with its lips compressed in a kiss. This emoticon is often used in text messages (SMS, e-mails, etc.) and is depicted in the form of : -*, where the last character symbolizes the lips in a kiss
Used to express feelings without an erotic element. Can be expressive of love, bringing a message of loyal affection, gratitude, compassion, sympathy, intense joy, and profound sorrow
Exact the same person (or a thing) can be kissed with a different meanings. And also the same kiss can have a dissimilar attitude.
Cultural connotations of kissing are also vary widely.
But the mimicry of all people in the world is the same and it's never lie.
So, this is the short graphic tutorial to understand a emotional "purity" of the kiss.