Men will give themselves away by a certain excited trembling in the muscles of the lower jaw upon seeing their beloved. In many countries it is required, on taking an oath, as the highest assertion that the witness would be speaking the truth. Unlike kissing for love , a friendly kiss has no sexual connotation. It appears as a ritual or symbol of religious devotion. In the Middle Ages it became a social gesture and was considered a sign of refinement of the upper classes. There are many such games, including Truth or Dare? The holy kiss or kiss of peace is a traditional part of most Christian liturgies, though often replaced with an embrace or handshake today in Western cultures. Kissing was a custom during the Biblical period mentioned in the Genesis Maybe they're trying to hide it from the world, still they cannot conceal their inner excitement. The holy kiss was also found in the ritual of the Church on solemn occasions, such as baptism, marriage, confession, ordination, or obsequies. In West Asia, kissing on the lips between both men and women is a common form of greeting. Blown kisses are also used when a person wishes to convey affection to a large crowd or audience. In fact, through observations across various species and cultures, it can be confirmed that the act of kissing and premastication has most likely evolved from the similar relationship-based feeding behaviours. Nyrop writes that "the kiss is the last tender proof of love bestowed on one we have loved, and was believed, in ancient times, to follow mankind to the nether world. Kissing in films[ edit ] The first romantic kiss on screen was in American silent films in , beginning with the film The Kiss. Why don't you include that in your films? Many Muslims also kiss Shrines of Ahlulbayt and Sufis.