Our recommendation is therefore to choose carefully, because there are "no refunds". This makes for stable families (in most cases) and a way to keep marriage mates together for life is in making marriage work on a daily basis. No one of course is perfect, but with the tools provided in God's word, we have can follow the Bible's counsel and work at being a good marriage mate ourselves, rather than expecting the other mate to be one to do all the work.
This is usually the theme of the discourse given before the vows are exchanged. Since these are vows made before God, what He has "yoked together, let no man put apart". It takes real effort to keep things together in today's moral climate....but we try very hard.