In my opinion,the thing that makes a lasting relationship,is having
mostly the same values.Over the years,you both change,but you still have the same,basic,sense of values.Otherwise,for better or worse,wouldn't be in the marriage vows.If you're not going to keep those vows,you shouldn't have taken them in the first place.
It helps detirmine,if someone is a "keeper" or a "catch & release!"
Irish
P.S.Just my $.02.

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Irish---Better to be dead & cool,then alive & uncool!
(Harley Davidson & the Marlboro Man)