To make things clear, will the Zoroark get infatuated by a FEMALE Pokemon. I am asking this as Zoroark will be shown as an Arcanine(F) and it will be weird if a female Pokemon infatuates another 'female' Pokemon.
Everything Zoroark copies from the last slot Pokemon is ornamental i.e other than appearance they have no effect whatsoever. So if your male Zoroark does make itself appear as a female Arcanine, as it is still originally male, an attract from a female Pokemon will work.
Source - Experience and this
Yes, Zoroark will get infatuated.
Source: Experience
Yes
Because Zoroark only makes an illusion and only uses its on moves , stats , gender , etc. So if zoroark is a boy then it will get infatuated or the other way around.