She says she misses me but doesn't text back?

Anonymous
Me and my ex split up a month ago, I wanted to win her back so I contacted her 2 days ago. I had a catch up with her and we arranged to meet. At first it was just a what have you been up to conversation and updates, then things started to get flirty and ended up sleeping with each other. Whilst I was in the middle of the act I asked if she missed me and she said yea, this made me very happy that we might have a chance of trying our relationship again.

I texted her a few days later saying how I miss her and that I want to be able to cuddle her but she never responds. I know her work times and even after she finishes work she doesn't respond, I send her messages on facebook and she just reads them without responding. Why would she tell me she misses me if she doesn't mean it?
She says she misses me but doesn't text back?
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