Rastapau,
I married a JW 22 years ago. She is a good woman who, before marriage accepted that I would never be a JW. She was reproved. Her large JW family did not attend the wedding. The elders later apologized for the harsh treatment. Life is good now, but it could be better and easier. I still struggle to remove the indoctrination from my two children. Things get better slowly, but I could have used my time better.
in your case, your girlfriend is caving in to the religion, and that in turn means that you have to cave in too. Not good sir!