Probably only learned the “let he whom is without sin cast the first stone” bit that homo-theologans teach them, to hit the phobe Christians over the head with....
Anyone who calls him/herself a “homosexual/gay” Christian, or “adulterer” Christian, or “porn afficiando” Christian, or “S&M/bondage” Christian, or “pederast” Christian, or “promiscuous” Christian, is fooling themselves and others (some others). No different than “any kind of sin” Christian. as in “thief” Christian, or “liar” Christian.
Or any sincere religious believer, for that matter. Every religion in the world (monotheist) teaches that if someone wants a relationship with God, they will (a) admit that I am sinful, lost and hopeless without His mercy and (b) vow to give up wrongdoing - there’s a lot of them, including sins like pride, greed, and so on - (c) when fallen down, repent sincerely and beg forgiveness, and (d) keep doing the first three. And (e) never promote sin as though it’s perfectly all right!!!
And one should see gradual progress - being less and less inclined to sin. A person can’t do the same sins over and over and over again and beg forgiveness over and over and over again.
You’re a father - you know what your attitude is when a kid says “Sorry!” and immediately goes and “does it again”.... Sincere sorrow means sincerely changing.
And since every religion in the world teaches the same sexual purity rules - meaning no adultery, no pre-marital sex, no masturbation, no homosexual acts, no bestiality, no incest, (I think that’s it!) - anyone who is sincere in his or her religious practice will abstain from those acts and not promote them as virtue. Doesn’t mean that if one occasionally errs or falls they are a total hypocrite. But such failures will cause the sincere believer to feel sorrow, beg God for forgiveness, and stive again to follow God’s laws.