You are both suffering from a very common phobia.
Fear of the dark goes back to the dawn
of man and since that time, millions
of people have fought it all there lives.
Please do not berate yourselves for this phobia or think you are silly for being afraid of the dark at your age.
Our phobias are ours to own and suffer with as long as we do nothing about them.
Since both of you have stated that your phobia is now interfering with your lives, it's time to take the bull by the horns!