Can a christian and a non christian have a successful happy marriage?

My parents best friends from grade school,even to this day, got married after high school. He is Jewish, she was Lutheran and for the sake of the kids she was confirmed into the Jewish faith.

There's more. Their oldest daughter, whom I've know since we were born, was raised and confirmed Jewish. She Married a Christian, whose family was fully involved with their church.

They had three children, and they were taken to Synogog on Saturday and Church on Sunday. They had a choice as they approached the time for confirmation (christian) or (bat (female) or bar(male) mitzvah). One chose not to be confirmed in either, and no longer visits any religious site. Two chose to make their bar mitzvah, one of them was also confirmed but refused to be born again, instead chose to be Bar Mitzvah'd.

The story is basically the same for one of the other children. His wife was Christian and like her mother-in-law she chose to become Jewish. But both their kids are Christian, but one no longer affilates with religiuos social gatherings (church).

ALL of them are a family. Their beliefs are their own and are personal. The children for two generations have been given the best religious educations the generation before could give them. They were not forced, they were not preached to but there were many discussions, all surrounding the individual need, emotions and choices.

There is now a new generation in the family, and neither parent attends any social religious function, but they AND the family have already begun discussing the best 'teaching' options for this new life.

How wonderful it as to grow up in such close proximity to such a family. That's wrong, I too was part of that family, it was their Synagog that taught me what I know about Judaism. It was their family that accepted my parents, and their children.

If we could just be part of that one big family, what need would there be for these kinds of questions?