There is always a lot of talk about attraction, desire, arousal, love, lust, sex and modesty. These things are intertwined along with concupiscence. People think they know what these things are, but the definitions are often confused. Matters of the heart cannot easily be reduced to rules, rather understanding of the heart is necessary. Rules can help people to act Morally but Values also come in to play.
Blind application of rules can lead to as many errors as ignoring all rules. Someone once said that you can fall out of the boat either on the left side or the right side, either way you get all wet.
Values are based on cultural beliefs and change over time. Also Morals are often overlap with Values. But since Values change over time. Different people have different Values. Thus the concept of what is Moral tends to change. A better way to define Morals is based on Principles. But Principles must be applied according to our culture while keeping in mind that application has been different in other historical periods. People living in other periods of history had different Values.
It gets very confusing and a consensus is rarely reached. On this thread there are now 40 pages of discussion and opinion, but only now has lust been somewhat defined, which is the entire reason that modesty is necessary. People argue and disagree for a long time because they have different mental definitions of words and different beliefs of what happens in their own minds and hearts and those of others.
I certainly have stepped on a few toes and was trying to encourage others to do a bit more thinking and study on matters of the heart and human sexuality. Love and lust are seen as simple things but to just begin to understand, a person must take into account biology and delve into the realm of philosophy.
John Paul II’s Love & Responsibility and Theology of the Body are based on
Phenomenology, a philosophical movement founded in the early 1900s by Edmund Husserl. As reflected in the previous link, some do have issues with how this is applied to the Catholic Church’s teaching on Marriage.
Dietrich von Hildebrand, a Catholic convert, was one of the first to apply phenomenology to Marriage and Love. von Hildebrand was a student of Husserl and friends with Pope Pius XII.
Controversies about sexuality have existed for a very long time, so it is not surprising at all that this thread just keeps going and going and going, like the Energizer Bunny.
A online document that is quite good on Theology of the Body is
John Paul II’s New Vision of Human Sexuality, Marriage and Family Life - By Fr. Richard Hogan