Personally I am agnostic, understanding of religious people's sentiments, not ruling out the possibility of a God, but at the same time, questioning suspicious prophets throughout history.
The other person would have to respect that. I'm not the kind of person to try to convert someone out of their religion, and I would not want someone trying to proselytize me. I wouldn't mind rather the person I'm with is an atheist, Christian, Muslim, Jew, etc, as long as they are not too extreme. I would not go to church just to please another person, and another person would be better for them if they are really extreme.
Religion is important to me, so it's not that I don't take religion seriously. It's that I don't live to convert others.
I suspect if there is a problem, it would not be because of me, but because of another person or their family upset that I am not of their religion.