Why is it very unacceptable when a guy sends nudes to a girl but there's no problem when a girl does it to a man?

Hello everyone I wondered why is it very unacceptable when a guy sends nudes to a girl but there's no any problem when a girl does it to a man, today a girl send me nudes on instagram and my reaction was just I think you sent it to the wrong chat and then she said that it was for me so what I did it was just keep talking about what we were talking normally but when a guy does it to a girl, the girl exposes him to everyone as a creep or whatever
Why is it very unacceptable when a guy sends nudes to a girl but there's no problem when a girl does it to a man?
Post Opinion