Being gay is a TEMPTATION. Just as lusting, even with only your mind, for a woman is a sin, the same applies for homosexuality. So it isnt just a sin when one has homosexuel intercourse, but the willing invitation of gay sex into your mind.
It's just like saint Peter's cross (upside down cross), and the pentagram (originally represented the 5 wounds of christ; the holes in his hands and feet, and the hole in his side from the spear)
