History of the Catholic Church and homosexuality
The Christian tradition has generally proscribed any and all noncoital genital activities, whether engaged in by couples or individuals, regardless of whether they were of the same or different sex. The position of the Roman Catholic Church with regards to homosexuality developed from the writings of Paul the Apostle and the teachings of the Church Fathers.
Source: Wikipedia — History of the Catholic Church and homosexuality (CC BY-SA 4.0)