Every official marriage talk applies Ecclesiastes 4:12 (threefold cord not easily broken) to the new couple's relationship - including God in the marriage. This 'really' means applying bible principles - as determined by the Governing Body - in the marriage.
This produces some of the most disfunctional relationships I've ever seen - and it's rampant among the latest crop of born-in, homeschooled barely 20 year olds.
Like my first marriage, these are filled with passive/aggressive behavior, guilt, control issues, financial difficulties and the inability to be independent of the congregation and family.
Divorce is going to happen in these marriages at rates much higher than in those with people who are emotionally mature, stable and excited about life. As a friend of ours says - "you JW's do things that us 'worldly people' would never do - lying, stealing & cheating".
ginger