I continue to be fascinated by what motivates MrsLuLu to ask the question.
First she qualifies the question, using the word Truthfully in brackets, perhaps implying that atheists are by nature innately incapable of telling the truth unless sternly told to; Then later we get this further qualification - that she merely wishes the Atheists to ADMIT ( note the capital letters for emphasis) to marrying in Church - but why would they need to ADMIT to anything? Why do they need to be told to answer "Truthfully"?
Come clean MrsLulu - Tell us what motivated your question, and give us your actual opinion on atheists who marry in Church - what do you think it says, or means?
Based upon your posts both in this thread and others, I think you feel quite indignant that atheists keep attacking religion, as you see it, and you actually think any atheist who married in church is either hypocritical, or secretely believes in god, or perhaps both. For you, this repesents some sort of killer argument against atheists, doesn't it? Go on, you can admit to it - at least then we would all know where we stand...
I am a lifelong atheist. Have never believed, will never believe. My first marriage however was in Church - not because I wanted it, but because the families expected it, my prospective wife wished for it, and because a Church repressnted the most suitable venue to celebrate whhat marriage was about. Personally, had society had a greater choice of suitable venues and accepted ceremonies for marriage, I might have kicked up a greater fuss. So my vows to a god were false, because i do not believe, but miy commitment to my future wife was there, as was my commitment to the legal status of marriage.
Second marriage, as a consequence of a divorce some years later - registry office for the legal registration, but a humanist service in a very nice outdoor location. Every bit as meaningful, without all the sanctimony of a church. A much improved experience. I just wish humanist ceremonies were legally recognised in England and Wales, as they are in Scotland.
And Humanist Ceremonies are much easier to arrange now - more celebrants, more information about them.
http://humanism.org.uk/ceremonies/non-religious-weddings/