Girlfriend pulled away and is distant after we moved?

Me and my girlfriend of a 8 months both in our 30s are moving to a new city together. She had asked me if I wanted to move in together. I answered yes I would like that idea. The following day she told me she had miss spoke and didn't actually want to move in together. But she was still very happy I was moving to the new city. When we moved she became very cold and distant. Eventually telling me she was no longer ready for a relationship. What just happened?

Girlfriend pulled away and is distant after we moved?
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