We have three children. Our oldest daughter is gay and lives with another woman and our son lives with his girlfriend. We must have done something right because our youngest daughter is a church going mother of our three beautiful granddaughters.
We have never allowed any relative that is unmarried to sleep together while visiting us, so that has never been an issue. But when our daughter came out we were faced with the problem of how to deal with it.
After much discussion and prayer we came to the conclusion that we must treat this sin as we would that of any one else who we invite into our home. You are welcome but you sin is not. If we were to exclude all who sin from our home or our lives, not only is our witness meaningless, but we become hypocritical for we are far from perfect and have sinned also. If we alienate them, who will be the good influence in their lives. Who will be the salt and the light?
Don't commit liberal-speak! She is a human being, not a "gay" (that's an adjective). She happens to also be a human who commits a habitual mortal sin - oral sodomy. But that doesn't not make her anything but human.
There is no such thing as gay, straight, homosexual, or heterosexual. There are humans who are inclined to various temptations (kleptomania, nymphomania, for example), and there are humans who commit sins by giving in to those temptations.