Religon in Dating

I'm atheist and my girlfriend is Catholic. It doesn't bother me that she goes to church and prays every night, and it's never been an issue that I don't do the same.
I voted that I would, 'yes,' date someone outside of my religion, because I obviously do. That said, I can see that in many cases, where it is a major issue for either partner, it could create a severe rift in the relationship.
But as it stands for me, my girlfriend has said that she knows that I am an intelligent person and respects my ability to come to my own conclusions. She has yet to try and force (or even suggest) her beliefs on me. I'd be lying if I said I don't think about how this will progress as we get older, but I'm also not worried.

Jam it back in, in the dark.