French kissing involves the tongue. What you do with it, and what she does with yours, is a matter of preference. At the most cautious level, the tongue does in fact enter, only to dart quickly out thus ending the kiss. The function was performed, and technically, the kiss can be defined as falling under the classification of "French Kiss." Now, on the other end of the spectrum, you have the type of tongue which, to borrow a cliche from Star Trek, "goes boldly where no tongue has ever gone before". The French kiss is the essence of kissing: capturing her mouth with desperate urgency, unifying your souls and thoughts with the mouth. While family members may sometimes kiss on the lips, a french kiss almost always indicates a romantic or sexual relationship. French kissing stimulates the lips, tongue and mouth, which are all areas very sensitive to touch. Considered by many to be both very pleasurable and highly intimate, french kissing is a prelude to further stimulation.
In a french kiss participants may exchange saliva, which would often be considered disgusting in other contexts, but which may add to the passion and excitement of the sexual kiss. Although most sexually-transmitted diseases are not transmitted by kissing, the exchange of saliva in a french kiss may increase the chances of catching an orally transmitted disease. French kissing is commonly used in movies to show willing sex between lovers. It is often used by lovers to express their intimate feeling toward each other and more often precedes sex. French kissing is sometimes referred to in literature as a soul kiss or a columbine kiss (columbine meaning like doves) or a paradise kiss. It is known colloquially as tongue wrestling, tonsil hockey and, in the United Kingdom, snogging. French kissing has been traditionally associated with Western societies, but is now becoming quite popular around the world. The term has been attributed to the French's more open views on cunnilingus and oral sex in general as the two acts are similar. Unlike other English terms using the adjective "French", the expression has been borrowed into French slang as the verb frencher. As a bit of humor, french kissing was euphemized as "Freedom Kissing" in a parody of Freedom Fries during the period of poor relationships between the United States and France just prior to the onset of the 2003 invasion of Iraq.
French kissing is one of the most exciting acts you can share before engaging in direct sexual contact. If you want to know if your prospective new lover is good in bed, before you find yourself let down in the bedroom, make sure to kiss them deeply. If your prospective lover is awkward, and your sexual chemistry doesn't flow at this point, you can bet the sex will be a big disappointment as well. Most people of experience will tell you that they undoubtedly never make it to the next level of sexual intimacy if the partner isn't a good kisser.
Remember that a good sexual connection is not everything in a relationship, but honestly, who can imagine being in a lover's relationship without it! It is the glue that can hold a relationship together through thick and through thin.