Why does my ex girlfriend give me signals?

My ex girlfriend recently moved in back with me and we are working on our relationship. We talk a lot more about out past and what went wrong. However she keeps telling me I’m free to sleep with other woman and she doesn’t care. In the same breath tells me if I do sleep with other woman don’t let her find out. Why would she say this if she said I’m free and she doesn’t care?

Why does my ex girlfriend give me signals?
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