Why do girls lose interest if a guy shows a normal amount of male interest in sex?

Let me give an example. I met this girl at the club we hit it off really well. 2 hours later she says “can we like fuck?” I say “yes” in a pretty excited way. I guess I’m not supposed to be too excited cuz she then says “we’ll if we get there.” And this is the only time this sort of thing has happened. So I’m confused women why is guys showing what to men is a normal amount of interest in sex a turn off?
Why do girls lose interest if a guy shows a normal amount of male interest in sex?
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