Y'all can live your life however you want, and I (or anybody, really) certainly can't tell you who you should have any kind of relationship with, be it platonic, romantic or sexual but, please keep in mind that:
1) this isn't the 1500s anymore, the Catholic Church isn't the law of the land,
2) attempting to push your religious views on other people is extremely rude
If you don't agree with divorce or polyamory or hook ups or whatever, that's one world view and it's valid, but the opposite is valid too and you just have to live with that.
tl;dr: What two or more consenting adults do in private spaces is nobody's business except their own.
Now, as for an actual TIL, TIL that Madden Gif Maker banned the word "Capitalism" because "too many people were using the gifs to make communist propaganda."