Keeping a Spouse Accountable to Godliness

I read an article this morning that goes right along with this concern. But before I post it, I would like to get your feedback.
There are a tremendous amount of marriages that fail. I won’t get on my soapbox and preach about the fact that most of them are doomed to failure from the get-go…(just had to put that in there, though, didn’t I?) In observing couples striving to have godly marriages and raise godly children and continue a growing walk with the Lord after taking on these responsibilities and pressures, I am bothered by a trend…
Wives or husbands who desire growth and godliness and all the while sit back and support or ignore a spouse who doesn’t.
How should a wife or husband deal with a spouse who 1. Claims a genuine faith in Christ and 2. Is consistently disobedient or demonstrates an ongoing apathy to Godliness…
Or, in general, a spouse that doesn’t actually seem to love the Lord at all…?