Scholars have occasionally tried to connect Hekate to male gods as consorts, or argued that she isn't really a virgin goddess and that the idea is just a sort of accidental association that rubbed off on her from Artemis, who is also a moon goddess, but most such attempts are pretty thin. The most popular choice for a reconstructed consort is Hermes, which isn't too surprising, since he's a god of crossroads, travel and showing-the-way himself, but the idea hinges on only two sources, both of which do not name Hekate directly but rather use another name, which scholars sometimes guess might be an epithet of Hekate or obliquely referring to her (Pausanias names a "Daeira" as having been the mother of a hero with Hermes as the father, but also call her an Okeanid, which seems to point to someone else, and a much later Roman account claims that Hermes slept with a virgin named "Brimo", which is occasionally a by-name of Hekate but also just means "terrible" and has been used for multiple goddesses, including Cybele, Demeter, Persephone and the Erinyes). Diodorus claims that Hekate was Kirke's mother, but this is most likely a poetic device designed to connect the two since both are famous for witchcraft and female power (and the same story is given elsewhere but with the names of different female nymphs and divinities as her mother instead).
It's actually kind of surprising how much staying power the theory of Hekate not really being a virgin deity has, and it's most likely because of a couple of different factors. One is most likely the fact that most Greek deities do have consorts when they aren't explicitly said to avoid them (like Artemis and Athena), and while Hekate is referred to as "maiden" in the Argonautica, there's no specific myth describing her vow of chastity the way there is for figures like Hestia. Another is probably because putting her with a consort would, in ancient mythological terms and also crusty scholarly terms, "control" her by giving her a masculine power to balance/keep her in check, and some scholars are always going to insist that goddesses always had that and that no ancient peoples ever respected unattached female divinities. (You can't stop them. We've tried.)
In fact, that idea of Hekate as a "frightening" female power - more frightening than the other Greek gods, anyway, all of which are kind of unruly and dangerous to their constituents - is part of the reason that in the medieval period and now in the modern day, she's associated so strongly with one of the most scary, negative female European myth tropes ever: the witch.
Talking about "witchcraft" in connection to Hekate is always sort of weird, because our modern conception of witches and witchcraft in the west is heavily influenced by centuries of medieval superstitious nonsense and the heavy influence of the Catholic Church, none of which would have applied to Hekate when she was being worshiped in ancient Greece. There's a whole lot of weird sexist bias tied up just in the phrase "witchcraft" itself, which is always directed at women, who are far more often demonized for magic-use in history than are men, who might be described as using "sorcery" or "wizardry" or a lot of other less immediately evil-connoted language. The ancient Greek word most often used to refer to Hekate and her realm of specialty probably translates most closely to simply "magic", but she's been through a couple thousand years of dudes writing about her and what she means and how ladies have evil moon-blood in them etc., so here we are.
Hekate is totally famous for sorcery and witchcraft, though, so what does that mean in ancient Greece? In part, it means intense herb-lore; examples of Hekate being a "witch" often include describing how she can create poisons and potions from plants and natural substances, which then allow her to work her will on those who consume them (Diodorus gets really excited about this, again because he's intentionally drawing a parallel between her and Kirke and Kirke is of course famous for herb-lore of her own). The Argonautica (and later Euripides, who was probably drawing from it) is also very clear that Medea, another famous Greek witch who slings spells and curses like nobody's business, worshiped Hekate as her patron and drew her power from her, implying that such witchy powers must be Hekate's to give and grant, and that they include bewitching others' minds and levying prophetic curses. Ovid later also claims that Hekate and her worshipers were given to magical incantations, although it's possible he was beginning to add some of his own Roman conception of what "witchcraft" is about. He's not alone; people have added to the idea of what Hekate does, based on what they think witchcraft is in their time period and culture, pretty much ever since.
A lot of later ideas of witchcraft attached to Hekate in the ensuing centuries don't really apply to her ancient Greek character; for example, she was considered a virgin by the Greeks, so medieval ideas of witches entrapping men with their evil evil sexiness and sucking power out of them through sex don't exactly make much sense when applied to Hekate, who needs a male figure to "give her power" about as much as Zeus needs a pet frog to give him permission to use thunderbolts. Trying to go all the way down the rabbit hole of medieval European ideas of witchcraft, how they apply to Hekate, and what kinds of things her original form might have more accurately been about would take way more time than we have here on this blog today (but there are totally books out there if you're interested!).
But the idea of Hekate as a terrible and frightening figure, that's all 100% real, regardless of the exact reasoning. She is a Titanid who survived the defeat of her fellow deities and is held in peculiar and unassailable esteem by all the gods, including Zeus himself. She owns and administers with sole power huge swaths of the universe, in every place that is otherwise an inviolate "kingdom" belonging to male gods. She is the goddess of magical powers and necromantic oracles, of ghosts and the darkness of the night, of shapeshifting and the uncertain, frightening place that are not really place at all, only between places. And she pretty much does whatever she wants, and has never shown any signs of being stopped by anyone.
Among the Greek gods, Zeus and Hera may be the King and Queen of Heaven, and the various celestial and underworld gods rulers of their own realms; but Hekate is the Queen of the Night, and no one is ever foolish enough to disrespect her power and influence.