In addition to the other informative answers, the “serious” reply to the first question would be “no, not really”. I’ll summon up a “Tales of Time Forgotten” blog post on the matter, as best as I understand it, with the recommendation to read the original if you can.

The difficulty with understanding Ancient Greek sexuality from our modern perspective is that they didn’t strictly think in two genders so much as a scale of masculinity, or something close to it. Accordingly, sexuality wasn’t thought of in terms of hetero- or homo-, but as an act of the less masculine party receiving the more masculine one. The expectation then was that your role and choice of partners would evolve throughout our life and progress along the expected social hierarchy.

An adolescent boy in his mid-to-late-teens (~14-18) was expected to be courted by young men (in their twenties) and eventually choose a lover (although suitors did have to work for it and being “easy” was shameful).

It’s worth noting that there was a distinction between (adolescent) boys/girls and children, which were off limits. Obviously, adolescents are still vulnerable and the whole thing is still messed up by most modern western standards. “Not quite as bad” is still bad.

Eventually, they’d reach adulthood and thus become (young) men themselves and were expected to strive and even compete for the affections of boys.

In their late twenties to early thirties, men were expected to proceed to mature adulthood, losing interest in boys and seeking a girl to marry instead (with much of the same expectations as before, though arrangement of marriages typically gave girls much less choice).

Any significant deviation from that expected course would, of course, be considered shameful. There might have been some leeway on the age brackets, but the “direction” of the age dynamic was quite firm, and men seeking out or receiving other men was seen as unnatural and effeminate.

Female sexuality is much less well-attested, just as women in general are less “visible” in most sources, and somewhat contradictory. On one hand, Sappho of Lesbos achieved quite a reputation, but she was writing ~500 BCE. On the other, some sources written in the first and second century CE strongly condemn it. One woman is criticised for loving boys, which would fit with the expectation that both women and boys were to “receive” men.

This might have been a shift over time, but the scarcity of evidence makes it hard to pin it to that cause alone.

On the whole, it’s pretty clear that a male vers would not have been “fine” by any standard. Men were to be tops, boys to be bottoms and mature adults were to be interested in girls and women alone.

If you are confident with your sexuality, why would it bother you what others do? It is not like it can switch who you are attracted to.

The only exception I see are the people who got convinced that gays can influence that their kids will be gays. That’s a bit harder to convince it is a bullshit.

Think about how often a preacher is caught with a guy, that preacher is usually one of the more hateful ones.

(I’m not referring to Catholics here, they’ve to get their house in order and stop protecting monsters. )