The Perfect Kisses According To The Kama Sutra

We kiss, we merge, we exchange...isn't kissing far beyond the usual barriers, simply the normal basis of romantic foreplay?

The description of different types of kisses in the Kama Sutra is richly detailed.
From light and quick contact, to the intense and intimate penetration of the tongue, each type of kiss produces a specific emotional response from the partner. In the Kama Sutra, kissing is an art; the mouth is a kind of sacred temple that can only be shared by those whose love is true.

A good kiss stimulates all the senses, savouring the lips of one’s partner, the smell of their skin, the warmth of their touch, the sound of their breathing and the look in their eyes at the moment that precedes the act. The kiss should not concern only the mouth and tongue, our whole body has to focus and participate in the experience. Similarly, a kiss is to provide pleasure and titillate the libido, not to cause the choking of one of the two partners in a battle of tongues.

There is a particular kiss for every situation. 
The Kama Sutra therefore identifies four types of kisses, and according to the different parts of the body on which it is given, there is the Moderate Kiss, the Contracted Kiss, The Firm Kiss and the Soft Kiss. 

A few kisses were even given names, and include:
The Touching Kiss: This type of kiss is full of tenderness, so it is exchanged between young people. According to the Kama Sutra: the girl licks lips of her partner with her tongue and closing her eyes, places her hands in those of her partner.
The Pressing Kiss: when the lower lip of the partner is pressed with force. This kiss is the symbol of strong desire.
The Exciting Kiss: when the woman receiving a pressing kiss moves her lower lip, in order to be desired more.
•  The Tight Kiss: when one partner takes both of the lips of their partner between their own lips. It is stated that a woman should abstain from practicing this kiss on a man with a moustache!