"Homosexuality refers to relations between men or between women who experience an exclusive or predominant sexual attraction towards persons of the same sex. It has taken a great variety of forms through the centuries and in different cultures. Its psychological genesis remains largely unexplained. Basing itself on Sacred Scripture, which presents homosexual acts as acts of grave depravity, tradition has always declared that "homosexual acts are intrinsically disordered." They are contrary to the natural law. They close the sexual act to the gift of life. They do not proceed from the genuine effective and sexual complementarity. Under no circumstances can they be approved."
Take note, the Catholic Church do not discriminate homosexuals. What the Catholic Church tells us is that because of natural law, any homosexual act is not consented, nor in any manner will they be approved.
Natural law is about what your inner being is telling you. Normally, if you are not feeling okay with a particular thing, something in you tells you so, unless you already hardened your inner being from these dictates.
"The number of men and women who have deep-seated homosexual tendencies is not negligible. This inclination, which is objectively disoriented, constitutes for most of them a trial. They must be accepted with respect, compassion, and sensitivity. Every sign of unjust discrimination in their regard should be avoided. These persons are called to fulfill God's will in their lives and if they are Christians, to unite to the sacrifice of the Lord's Cross the difficulties they may encounter from their condition.
Homosexual persons are called to chastity. By the virtues of self-mastery that teach them inner freedom, at times by the support of disinterested friendship, by prayer and sacramental grace, they can and should gradually and resolutely approach Christian perfection."
CHASTITY, DUDE! SELF-MASTERY, PRE!