I am Catholic and my fiance claims himself as a "Christian"
He attends church with me and my family, and really takes an active role with my faith. I never asked, or mentioned it.
I always wanted to raise my children in the Catholic faith, send them to Catholic and he has no objections, and we are being married in the Catholic church. All his choices and something he had no problems with.
My parents were similar. My Mother Anglican, father Catholic. They were married in the Catholic church, we were raised Catholic, sent to Catholic schools. My Mother supported my Father is his desire to raise his children Catholic and never objected.
Faith can surely be a sore spot for some. My best girl friend can't even approach this subject with her long term boyfriend. They do not agree whatsoever and religion is a huge source of conflict for them, but overall they really aren't two that compromise really all that well. They both want their own ways or no way.