One of the most common and frequent questions Busted Halo gets from people is, What exactly does the Catholic Church teach about oral sex? It is an understandable question that is not easily answered with a simple yes or no response. First and foremost, the Church reserves all sex for marriage. This is not simply a way to restrict our natural sexual impulses, but rather to use them for what they were properly intended, namely for procreation of children and to build unity between husband and wife.
Q — Is being physical before sex foreplay, etc. Even when married? A — Thanks for the question! I have been getting great questions lately and I sure do appreciate them. For the first part of the question the simple answer is yes. But, I have written more detailed explanations to why previously.
Oral stimulation can be part of a moral, healthy and loving sexuality within marriage. As my general article about Christian sex discusses, there are some basic Catholic guidelines for sex within marriage. They help us understand and live the Christian call to holiness in married life.
Pope Pius XII taught that it is gravely immoral for the husband, nor the wife do perform any sexual act to climax, outside of the natural marital act. The wife may not perform oral sex fellatio on her husband to climax. The husband may not perform oral sex on his wife to climax. In both cases, the couple sin gravely. Outside of this natural act, it is not even given within the matrimonial right itself to enjoy this sexual faculty fully.