What is the meaning of "ero" in Japanese?

This word appeared late in Japan. It seemed エロスcould only be read in academic writings. People have invented a hybrid adjective Eroi (エロい), denoting erotic. Ir became popular among civil.

Thus エロ can be noun and adjective.

Ero is short form of Eros (エロス).

I am writing a romantasy novel and I’m starting out with a love interest who was a previous ex. In the end, he will betray her, however I need some character flaws that leaves characters feeling uneasy about him. Any tips?

What is the meaning of "ero" in Japanese?

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