It is a bit of a minefield but this (which is American, from Iowa) seems to state that ALL good Catholics should be chaste - ie: not engaging is sex before marriage, because of God seeing sex as the act for procreation.
Chastity is the stumbling block. I am not sure many chaste people exist. Are all Catholics over the age of 16 chaste - really?
waterloocatholics.org/information-for-gay-lesbian-catholics
I cannot be the only one that thinks many young Catholics co-habit and have sex before marriage, whatever their sexuality?
Gays and Lesbians in the Catholic Church
"Many Catholics, including gay and lesbian Catholics themselves, are confused or misinformed about the status of gay and lesbian persons in the Catholic Church. As a result, many gay and lesbian Catholics fail to participate as fully as they can in the spiritual and sacramental life of the Church, and many Catholic communities fail to welcome and embrace gay and lesbian Catholics as fully as they should.
If you are a gay or lesbian Catholic, the first thing you should know is that gay and lesbian persons are always welcome in the Catholic faith community.
A gay or lesbian Catholic who is living a chaste single life is a Catholic in good standing, and is entitled to participate fully in the spiritual and sacramental life of the Catholic faith community.
A gay or lesbian Catholic who regularly engages in sexual activity or is a partner in a committed personal relationship which includes regular sexual relations is entitled to participate in a limited way in the spiritual and sacramental life of the Church.
Catholic teaching makes important distinctions between a homosexual person, a same-sex attraction, and homosexual actions.
The Church affirms the dignity and value of every human being, regardless of sexual orientation. The Catechism of the Catholic Church insists that homo-sexual persons “must be accepted with respect, compassion and sensitivity” (#2358). The U.S. bishops have written: “Nothing in the Bible or in Catholic teaching can be used to justify prejudicial or discriminatory attitudes and behaviors.”
Some Church documents describe same-sex attraction as “objectively disordered.” This is the Church’s way of saying that same-sex attraction tends to seek fulfillment in sexual acts which fall short of the creative meaning and purpose of human sexuality as given by God and ordered to God’s creative purpose. However, the U.S. bishops point out, a homosexual attraction is not in itself sinful, and God does not love a person with a homosexual orientation any less than a person with a heterosexual orientation.
The Church considers homosexual acts “intrinsically disordered.” This is because, contrary to the natural law, they “close the sexual act to the gift of life” and “do not proceed from a genuine affective and sexual complementarity” (Catechism #2387).
This is the reason why homosexual Catholics, like unmarried heterosexuals, are called to a life of chastity, which limits the legitimate exercise of sexual relations to men and women in a sacramental marriage. It is also the reason why the Church does not recognize gay civil unions as sacramental marriages.