I had some questions while whatching the show

1. During the class : religious father/brother ( who talks about love), he speaks as if homosexuality is perfectly normal and catholic church supports it .... Really??? As far as i kmw catholiccs show highest discrimination towards LGBTQ community.
2. Are dominic and his 2 other close companions effeminate gays ? Or are they all 3 Ladyboys ( transgender)??. They always address each other as SIS ,wjich means they identify thrmselves as girls.
But dominic tells luke that he is Gay .
What i dont understand is , ... are these 3 kids confused by identyfying themselves as gays inspite of being ladyboys ? Or the script writers do not know the difference between gay and transgender?
3. Dominic seems to be very pious and preaches catholic morals and doctrines especially to luke during the paired couples discussion at night
The same dominic approaches a fortune teller time to time to know about his soulmate . He looks a confused kid .