I started dating a guy as something like casual and now we’ve taken it very fast and he wants to only be physical with me?

I don’t have feelings for him but the fact that he just wants to use me for sex and it’s been just 2 weeks and we’ve already hit second base, and I got to know now that he wants me only for sex makes me feel bad , I actually cried I don't know what to do
I started dating a guy as something like casual and now we’ve taken it very fast and he wants to only be physical with me?
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