used a fake name to boast about his relationship with women in a NY Mag article?

In a 1992 issue of New York Magazine, a letter was published in defense of Donald Trump and his relationship with women.

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

No record of a Carolin Gallego in the employ of Trump has been found, and longtime Trump lawyer Michael Cohen said he’d never heard of her. The similarity between the letter and Trump’s own speech pattern has been noted by journalists and commentators.

Trump also used the pseudonyms John Miller and John Barron when speaking with the press.

Washingtonian – Carolin Gallego Wrote a 1992 Letter Saying Women Love Donald Trump. We’re Having Trouble Finding Her
Wikipedia – Pseudonyms of Donald Trump