Homosexuality is as natural as being left-handed. The person with a GLTS orientation treats it as a gift from God, not a curse. Recognition that God created everyone out of love. Homosexuality is sinful, just as alcohol or spouse abuse is sinful. Through prayer, Christian friendships, mentoring, and counseling, a person could recover from homosexuality just as they could recover from learned abusive behaviors.
Marriage is the public recognition of life-long commitment between two people.
God brought two people together in love. The church can't dictate by laws what God has brought together. A GLTS marriage can be as loving as an opposite sex marriage, both towards themselves and in raising children. GLTS parents could model both traditional feminine and masculine traits to their children, teaching them it was ok to publicly cry or express their feelings publicly with another. Marriage is the public recognition of life-long commitment between two people, each of the opposite sex.