In Scandinavian culture-being called a homosexual was literally grounds for an honor duel. To the Greeks and Romans-it was contemptible(contrary to modern propaganda). In the germanic tribes-they were drowned in literal bogs.
When we refer to homosexuality in ancient times-it should be noted, there was a hierarchical aspect to it-young men were "initiated" into adult society, with the attendant privilege and responsibility-often through pederasty, at least in elite circles.
Doing a brief google search-apparently ancient writers noted the practice amongst the Celts(and it served a similar function).
In short-they would likely have found modern homosexuality, with its effiminacy and public debasement shameful and obscene. Whereas british elite boarding students being buggered-thus in some sense "initiating" them into elite social and political circles would have been more familiar.
It is true-homosexuality has existed in European cultures for thousands of years, though classical writers condemned it as much as they might have celebrated pederasty(though some did not).
(Not to mention-ancient Assyria made homosexuality punishable by death, wherein other Semitic peoples at least looked the other way-Persia is famous for eunuchs after all). Evidence regarding the legality of sodomy in Egypt and Babylon is also sparse.
In general-it seems to me, male homosexual conduct was tolerated insofar as there was some sort of hierarchical division-a young man might be sodomized by an older tutor, or hazed by his peers. Not to mention what happened boys. But we don't see any support of what we might call "faggot" behavior.
I think its fair to say ancient Europe and the ancient Near East(the context in which Judaism and through it Christianity) would have emerged had very different and very mixed ideas about homosexual conduct, ideas that don't evenly map onto modern conceptions.
