I told her I have feelings for her and everything went wrong I don't know why?

It's been three weeks since I started texting this girl on Tinder 24 hours! We've met up three times, had sex, and she even gave me her number. She told me it was the best experience ever and that she really enjoyed it. However, the next day, I told her I was starting to develop feelings for her. and she replied that she doesn't want something serious because of my nationality and religion but she said its not about her principle I thought everything was going well since we seemed to match, but suddenly she told me to stop texting her and that she's not interested. I just expressed my feelings!! there's nothing wrong with that, right? it's just really hurts

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Correction : she said it's all about her principle nothing much, However I'm not religious!
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But she knows. That really hurts me because I expressed my feelings and I showed her how much I could love her! Also, it's weird she didn't even block me after that. Is she going to regret what she said? I don't understand... I was so nice to her I really took care of her when she was in my place I don't get it!

I told her I have feelings for her and everything went wrong I don't know why?
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