<human>: Condense the text into a few key points

The title says it all. We've been together a bit over a year, and have been living together for a few months. It's been pretty damn good. We get along well, and are both conscientious roommates. It hasn't been perfect of course, but considering we went from seeing each other once, maybe twice a week due to distance, it's went really well.

About six months ago, we had a talk about kids, and both held the position that we didn't want them. We really didn't talk much more about it. We'd each occasionally joke about how glad we were about not having kids when we saw post on Reddit about a kid being bad, or saw one during our day. 

Then, a few days ago, we were having a talk about marriage. We talk about money, possessions, possibly buying a house. We had similar thoughts on everything, but then she brought up kids. I thought she was joking, but after pursuing it, she says she hasn't made up her mind. 

I'm so scared to lose this girl, I love her immensely. She's been an amazing partner. I really don't want kids. I have no desire to have a child of my own, nor to raise one. I don't think I can change my position. I won't try to convince her, because that's a huge decision. I guess there's not really a question here, because if she's adamant about having kids, we're not really compatible. I guess maybe some advice on how to handle this? Anything that might help would be great. Thanks for reading.
<bot>: girlfriend and I talk about kids early in our relationship, agree to not have them.  Recently had a talk about marriage, she's reconsidering kids.  I still don't want them.  Advice?