I believe that the whole "pre-marriage" thing is there to separate out from 'co-habiting' those whose cultural and religious beliefs do not permit them to co-habit with their fiance. [1] Presumably as far as their faith goes, they're not supposed to be sexually active either, so quite why such people filling out that form would *want* this identified on there is beyond me. I have just re-typed a sentence that began "I suspect that...." several times, and decided each of the 'reasons' for my suspicions was too inflammatory, despite me not intending them to be. Feel free to fill in the blanks with your own..

ETA: [1]That, and the government's desperate attempt to gather *any* kind of statistics to show our 'traditional family values' are still breathing.