Another Catholic priest’s viewpoint, in addition to his answer in relation to an earlier CAF thread, on this subject. The catechism too, would seem to back his views.
*CCC 2366 Fecundity is a gift, an end of marriage, for conjugal love naturally tends to be fruitful. A child does not come from outside as something added on to the mutual love of the spouses, but springs from the very heart of that mutual giving, as its fruit and fulfillment. So the Church, which is “on the side of life,” teaches that “it is necessary that each and every marriage act remain ordered per se to the procreation of human life.” “This particular doctrine, expounded on numerous occasions by the Magisterium, is based on the inseparable connection, established by God, which man on his own initiative may not break, between the unitive significance and the procreative significance which are both inherent to the marriage act.”
catechism.cc/articles/marital-foreplay.htm
So my answer to the above question is that neither the intention (purpose) to use an act as foreplay, nor any circumstances whatsoever, can justify a sexual act that is intrinsically evil. Unnatural sexual acts are intrinsically evil due to the deprivation of the procreative and unitive meanings. And the presence or absence of sexual climax does not change the moral object. An unnatural sexual act with sexual climax has the same evil moral object as an unnatural sexual act without sexual climax. The moral object has not changed, and so the moral nature of the act has not changed; it remains intrinsically evil. Therefore, no type of unnatural sexual act, with or without climax, can be used by a married couple at any time, regardless of whether or when an act of natural marital relations occurs.
All non-marital sexual acts are intrinsically evil and always gravely immoral. All non-unitive sexual acts are intrinsically evil and always gravely immoral. All non-procreative sexual acts are intrinsically evil and always gravely immoral.
The answer of Catholic priests:
(updated 11 July 2012)
A similar question was asked, in Catholic Answers discussion group (
forums.catholic-questions.org), as to whether “Anything goes within the marriage act as long as the seed goes in the right place.”
Fr. John Gow answered as follows:
“I have always taught that it is wrong. That part of the body is not meant for that. Sure, it might be physically possible and/or enjoyable, but it is not what makes the sexual act unitive. It is wrong to think that as long as a person concludes the sexual act in the appropriate place that they were justified in doing x, y, and z (which were non-unitive) before that conclusion happened. In the conjugal act, the husband and wife completely give the gift of themselves to each other. Part of that is their gift of fertility, the potentiality of new life. My argument has always been that the sexual act is one act and that there should always be the unitive and procreative elements present; once either of them are taken away from the act itself, the nature of that sexual act has changed.”*