<human>: Give me the gist of the text in a nutshell

I've been with my girlfriend for a little over a month. Everything is great so far, and I can see myself with her for a lifetime. Her parents got divorced when she was young, and I've met her biological mother. We got along great.

Now she wants to introduce me to her father and step mother, but apparently they've become quite religious. She says if I'm not Christian there's no way they'd ever accept me and it would be a deal breaker for the family, so she wants me to pretend. My GF herself is spiritual but not seriously religious.

I don't really know what to do - I've been atheist since I was about 4 years old and stopped going to church. I don't know how to pretend otherwise, but I guess I could do research into local churches and pick one to pretend to go to. I don't personally have a problem with religion, and have lots of religious friends, but I personally have no faith whatsoever. I really don't think I should start a charade now that I'm going to have to keep up for the rest of my life or at least for this relationship. At the same time I don't want her family to hate me. What do I do?
<bot>: GF's dad and step mom are hardcore Christian. I'm atheist. GF wants me to pretend, I'm not sure that's a good idea.