The best evidence for the Devil being a Lesbian though comes from extra biblical sources. For example, in describing the festivities of Bona Dea, Juvenal says the following:
"All know the secret rites of the Good Goddess, when the pipe
Stirs the loins, and the maenads of Priapus, maddened they say
By wine and horns alike, go tossing their flowing hair about
And howl. O how all their hearts are on fire for sexual pleasure
How they squeal then to the dance of desire, and how powerful
The torrent of undiluted lust that covers their drenched thighs!
Saufeia doffs her garland, challenges the brothel-keeper’s
Slave-girls, then goes on to win the prize for shaking her arse,
She herself, in turn, admires Medullina’s undulating wiggles:
The contest’s between the ladies, their skill matches their birth.
Nothing is simulated in play, everything there is done for real,
Enough to light a spark in Priam, Laomedon’s son, grown cold
With furthest age, or even in old Nestor’s ruptured scrotum.
Then comes the restless itch of delay, then it’s naked woman,
And the shouts from the whole grotto echo there, in unison,
‘Now’s the moment, admit the men.’ If by chance the lover’s
Asleep, she’ll tell his son to don a hood and hurry to join them;
If that’s no use, she’ll summon a slave; if there’s no prospect
Of slaves, she’ll hire the water-man; if he’s nowhere to be found,
And there’s a lack of men, not a moment slips by, before she’ll
Accommodate her arse, freely, to a donkey’s rude attentions."
Of course, there is the matter of the men. We don't exactly know what happened to them, but, despite first glances, it may not be good. Of course, it could also be that what happened to the men was so secret that we really don't know. It could also be something similar to Ezekiel 8:14, as understood above.
Moving on, we read in the 1911 Encyclopedia Brittanica that:
"BONA DEA, the “good goddess,” an old Roman deity of fruitfulness, both in the earth and in women. She was identified with Fauna, and by later syncretism also with Ops and Maia—the latter no doubt because the dedication-day of her temple on the Aventine was 1st May (Ovid, Fasti, v. 149 foll.). This temple was cared for, and the cult attended, by women only, and the same was the case at a second celebration at the beginning of December in the house of a magistrate with imperium, which became famous owing to the profanation of these mysteries by P. Clodius in 62 B.C., and the political consequences of his act. Wine and myrtle were tabooed in the cult of this deity, and myths grew up to explain these features of the cult, of which an account may be read in W. W. Fowler’s Roman Festivals, pp. 103 foll. Herbs with healing properties were kept in her temple, and also snakes, the usual symbol of the medicinal art. Her victim was a porca, as in the cults of other deities of fertility, and was called damium, and we are told that the goddess herself was known as Damia and her priestess as damiatrix. These names are almost certainly Greek; Damia is found worshipped at several places in Greece, and also at Tarentum, where there was a festival called Dameia. It is thus highly probable that on the cult of the original Roman goddess was engrafted the Greek one of Damia, perhaps after the conquest of Tarentum (272 B.C.). It is no longer possible to distinguish clearly the Greek and Roman elements in this curious cult, though it is itself quite intelligible as that of an Earth-goddess with mysteries attached."
Some notes. We clearly see an association with snakes (again!). Her victim was a porca (a slang term for female genitals!). The term might also refer to a sacrificed male (Feminists might sometimes refer to men as pigs. Interesting, no?). But, this is speculative on my part. Finally, the goddess was known as Damia. When written in Greek, it looks like this: ΔΑΜΙΑ. However, this looks very much like Lamia (written in Greek, it is: ΛΑΜΙΑ). You know, the man eating monster? It is, quite literally, a one line difference. A Coincidence? I don't believe so.
I would encourage you to read more about Bona Dea and Fertility rituals around the world. They often involve dildos.
Finally, given all of this, I think I can hazard a guess as to what the Devil is fighting for. Namely, some form of Lesbian Supremacy (with a bestial component).
One objection to the above is that the devil is consistently referred to as a male. However, Scripture can often refer to females as males when they behave like males. So in Zechariah 3:10, he uses the masculine pronoun to refer to the three female entities he saw before, that is, the two women with wings and the woman of Wickedness. Similarly in Ezekiel 13.
This entire thing sounds ridiculous, right? Look at it yourself.