He would write into newspapers pretending to be his own fictional secretary…

It was very obvious what was happening:

“Based on the fact that I work for Donald Trump as his secretary—and therefore know him well—I think he treats women with great respect, contrary to what Julie Baumgold implied in her article … I do not believe any man in America gets more calls from women wanting to see him, meet him, or go out with him. The most beautiful women, the most successful women—all women love Donald Trump.”

Carolin Gallego December 7, 1992. (Not a real.person)

https://mashable.com/article/donald-trump-carolin-gallego-new-york-magazine-letter