Spartans were not gay, they just had a different kind of homophobia. They had strong male bonding but beat the shit out of people who actually got caught engaging in gay sex. To an Ancient Greek or Roman, being penetrated made you something near subhuman, something that should happen to only slaves, foreigners and women! This doesn't mean they didn't do it, but it tells us that it wasn't accepted as normal or good. Whereas on the other hand straight sex was hailed as a divine experience in Pagan culture (to assume Pagan = Gay is completely inaccurate) to the Greeks and Romans gay sex always involved one man submitting to another, which to the Proud Ancients was utterly abhorrent. They sure as hell had gay sex in Greek and Roman times, as their art and culture tells us, but that's like assuming upon seeing modern day gay literature that "Americans" were gay. Just as today, you'd do the act with a consenting mate and be
hated for it by large numbers of people. For example, at a Triumph Roman soldiers would sing a song mocking their commander, and the commander would have to in good spirit sit through it to show what a good sport he was. The only time Caesar took offense at such a song was when it described him as having sex (in the submissive position) with the King of Pontus. They did it, but they weren't
proud of it.
This would need to involve a massive POD, mate.
But, too help you, Yukio Mishima.