Q. 1. When is kissing a sin?
A. 1. First of all, it is important to differentiate between the different kinds of kissing.
The first kind is a brief kiss as a sign of love. Such is displayed between spouses, parent and child, brother and sister, relatives, etc... There is no sin in this kind of kissing.
The second kind is a kiss of farewell and greeting. It is similar to the one above, often manifested in public places, including bus depots, train stations, airports, etc... There is no sin in this kind of kissing.
The third kind of kissing is the one that is seen between a married couple, such kisses often lasting longer than a brief moment. There is no sin in this kind of kissing.
The next kind of kissing is the one between a boy and a girl who are in love. There is no sin in this kind of kissing.
So when does kissing become a sin? Kissing becomes a sin when two unmarried persons of opposite gender implement prolonged, passionate, exciting kisses that gratify, such kissing leading to a desire for intercourse, such a union only being lawful in a Sacramental Marriage.