FYI: Crowley claimed that the Eye in the Triangle is symbolic of the male anus. Hence bum sex if you're a guy is one of the paths to enlightenment. I read this in Israel Regardie's book of the same name, which is an account of his time as Crowley's understudy.
Regardie said that he called his book about Crowley 'The Eye in the Triangle' to indicate that he thought Crowley the ultimate ass.