When I was dating someone in my congregation, we got pulled aside one day because someone has seen us....walking down the street together without a chaperone!!!
Her parents also insisted that we take seperate vehicles to drive 2 hours to visit them, and that we'd have to sleep in different houses upon our arrival. We were both adults with our own homes. After double-checking the WT CD-ROM (yeah, we actually wasted the time doing that), our response to them was: "Well it's your house and so we'll respect your rules. We've done the research, and unless you can show us from the WT that two dating adults must always travel with a chaperone and cannot sleep under the same roof (in sep bedrooms obviously), I guess we'll never get to visit you as a dating couple." Two days later they called back and said one car and sleeping under one roof would be fine.
As an aside, I think it's hysterical that the Bethel dating rules mandate a chaperone in many circumstances, but strangely enough, a Bethelite is aloud to have his girlfriend alone in his room...as long as the door is open. Anyone who has spent any time at Bethel knows that the corridors there are ghost towns 95% of the time. Even if the door WAS open, how many random Bethelites would just wander into a random room just because the door was open. I can only imagine the amount of hanky panky that has occurred under that "open door" policy.