You are referring to this article:
Sexual Sins within Marriage
catholicplanet.com/CCSE/marriage-sins.htm
In section B: Common Heretical Teachings
I list four **heresies **on the subject of marital sexual ethics, in bold as follows.
**1. The claim that unnatural sexual acts can be used as foreplay or stimulation, as long as this is combined with, followed by, or completed with an act of natural marital relatio
- The claim that unnatural sexual acts (such as manual or oral stimulation) can be performed on the woman after natural marital relations in order to bring her to climax.
- The claim that unnatural sexual acts can be performed on the woman before natural marital relations in order to bring her to climax prior to natural marital relations.
- The claim that only the man’s climax is inherently related to procreation, so that the woman’s climax can be achieved outside of natural marital relations without sin.**
Pope John Paul II did not teach any of the above four heresies.
The part quoted by Bookcat:
“3. Is producing sexual climax in one’s wife permissible before or after natural intercourse? No. Producing a sexual climax in the husband or wife, by any means other than acts of natural marital intercourse open to life, is immoral.”
**is not from the section of the article on heresy. **
It is from a Q and A section (section C) later in the article.
Notice that the answer that I give to this question allows climax due to natural marital relations at any time, and disallows climax due to unnatural sexual acts at any time.
Even so, Pope John Paul II did not teach in contradiction to my above quoted assertion. He never states or implies that the husband or wife may perform any unnatural sexual acts at all, at any time, for any reason.
Also, note that my article: Can a Pope Ever Be a Heretic?
catholicplanet.com/RCC/heresy-papacy.htm
concludes that no Pope can ever fall into heresy, not even in his mind and heart, because the Pope is the seat of the Magisterium.