Project Management and Marriage Life, they can be the same

Am I crazy, to compare project management with marriage life? Both of them are like apple and orange, you cannot compare them! There are many successful marriage without the need of project management!
Unfortunately, they both have more similarity than you have ever think. Those who have failed in marriage do not manage their marriage well. While for those who succeed, actually they unconsciously manage their marriage life well, without noticing. If so, what are the similarities between both of them?