I'll say this from personal experience
i live in an entirely christan family. both of my parents don't like the idea of homoloveuality, my dad doesn't care about it nearly as much as my mom does. let's just say she really despises it. anyways, my sister does have a couple of lesbian friends, some of these friends are childhood friends too that my mom knows a lot. even though my mom has some pretty strong hatred for homoloveuality, she is the most kind and welcoming woman in this earth that i can think of, and homoloveual or not, she treats everyone the same.
a lot of christians let their hate get to them and this is where problems begin.
i think the rule is that it's ok to be gay and be attracted to the same love it's just
not ok to have love with them
that's another thing. outright showing gay affectionate unfortunately shows spite towards christians and this is where the hatred stirs up. that's why i say to keep it on the down low around him