Why would it be acceptable for older women to go after young guys, but when a man goes after a going woman it's called icky or pedophilic?

You see this all the time, man in his thirties dating a 19 year old woman and he is called pedo, or predator, as if what he is doing is wrong. Yet an older woman dating a young guy is told " slay queen" and "rob that cradle".

Its the same thing with teachers. Female teacher has sex with her student, she rarely sees consequences for it. But if a male teacher did it, prison for 20 years.
Why would it be acceptable for older women to go after young guys, but when a man goes after a going woman it's called icky or pedophilic?
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