I should also consider that "Indo18" refers to age-restricted material. Mixing that with "coworker" and terms of endearment is problematic. Maybe the user is writing a story or essay that has inappropriate relationships as the theme. Alternatively, "Indo18" could be a typo or mistranslation. "Indo18" might stand for Indonesian adults content, which is restricted. Since the user included it, they might be seeking to create content that involves adult themes in a professional setting, which is inappropriate.