I was a classics major in college and actually had a class where this exact topic was discussed. In ancient Greece, homosexuality was a way of keeping oneself to a high social standard by using females to reproduce and only being intimate with someone of your same or better social and intellectual status, usually being another male. As far as 'gays' go, it was expected that a man have a wife to mind the house and children, and affection was something that could develop. However it was widely believed that a 'true love' type of connection could only be had between people with similar souls (i.e. education level, philosophical beliefs, social status, and peer groups) which generally led prominent or respectable men to seek male lovers. Said lovers could be temporary flings with younger assistants, or long lasting supportive relationships between two friends. A great way to get a grasp on the ancient Greeks beliefs and philosophies on true love and soul mates is to read Plato's symposium. This piece follows the great philosopher Socrates into a meeting amongst his peers and they discuss in detail the complexities of the soul, love, and life. It opened my eyes, and I think this would be a good read for you too!
hi! not discouraging direct responses to your questions, but meanwhile, you may find some useful info in this section of the FAQ
Homosexuality wasn't all accepted at one point in Athens. A speech was made by Aeschines, now known as 'Against Timarchus' which was basically him explaining how Timarchus had been prostituting himself to other males, including slaves (big no no), and how it was an act of defilement against the body to give in to lust. It does mention though in the same speech of how it is alright if you adore the other person, but the idea of male/male sex for simply pleasure was frowned upon.