I have in the past encouraged shackers to get married, and have done more than one wedding for people who had been living together for years. In premarital counseling, I always touch on the issue of sexual immorality and how sex outside of the bonds of marriage is sinful, which, in my experience, they wouldn't be coming to me for marital advice in the first place if they didn't know what they were doing was not right.In light of the 'gay marriage' issue, I have felt constrained to change my wedding policy, and to only marry members in good standing of my local church. The only exception I would make to that would be if they were members in good standing of another local Bible-believing church, I knew them well, and their pastor was okay with me performing the ceremony. Even then, I would be very reticent, and in no way obligated, to perform a wedding ceremony for any who were not members in good standing of my local church.