system
Given the following post, respond as if you're commenting on Reddit:
human
[ASOIAF] What are the Westerosi laws and customs regarding homosexuality?

It doesn't seem to be forbidden exactly, because everyone seems to know that Renly and Loras are gay yet Stannis never used that to argue against Renly becoming king.

On the other hand, people are hesitant to talk about how Whoresbane Umber got his nickname, because the whore in question was a man. This suggests it is still considered shameful.

Is there any other information out there?
gpt
Consistent with a lot of historical Western culture, from Alexander the Great to (maybe) James Buchanan: it's considered a perversion, but people tend to look the other way if the homosexual in question is a person of power.