My mum’s best friend’s sister has same sex attraction. It wasn’t until I was 22 that I realised they were not just “flat mates”.
I saw their affections at various functions, but they were quite respectful being around such large numbers of Catholics, so I just thought they were good friends. Perhaps you should just do that, if your kids ask, tell them they’re just “flat mates” or whatever the term for people who live together platonically or as friends is where you’re from.
Of course, being as saturated as our culture currently is with homosexuality, your children might ask more direct questions, and if that’s the case, do what some of the other posters have said. Tell them about marriage and the Church’s teaching for it, age appropriate of course.
Perhaps, saying something along the lines of some people know God very well, and they know what he wants them to do, and they know that God wants a man to be married to a woman - becasue that’s the only way babies can be made, and God wants more babies. However, some people don’t know God very well, and so they live in a way that God wouldn’t want them to live, and its our responsibility as Christians to be kind to them, and if they ask us how to know God we tell them, and if they don’t, we just live very well and be very good so they can see God is in our lives.
