I am of the Jewish faith and perhaps I am overreaching to offer my opinion to the manner in which the Church follows God's law as I am in no position to speak with any authority on the subject but I believe any such person must be approached in a specific manner of welcome yet in quarantined sense of observation,as if one seeking membership in an exclusive club. That is, to first have any would-be members satisfy the club's requirements before having access to its privileges.
Any practitioner of gay lifestyle choices seeking the love of Christ should be held in the highest respect and consideration but kept in quarantined state in which any privileges of Church membership be withheld, told in no uncertain terms that which the Church demands the wholesale disavowal, abandonment of previous lifestyle practices before membership can ever to considered.
It's like giving any credibility to an organization called "Nazis for Jews."
Along the same lines, I have a close friend who retired from pastoring a large church in MD. When he learned of a homosexual attending his church, he sat them down in his office and told them they have two choices: 1) stop practicing homosexuality, or 2) leave the church. Some left the church, but many left homosexuality and stayed in the church.