I didn't see this one, sorry if I missed it. In the Illiad, Achilles and Patroclus are very close. It isn't too hard to read their relationship as sexual in nature. Some key incidents in the story are Patroclus wearing Achilles armor to strike fear in the enemy hosts, Patroclus's death, and Achilles violent response to his death (he kills Troy's champion, Hector). In ASoFaI, Loras and Renly are probably lovers. Loras wears Renly's armor at the Battle of Blackwater to strike fear in Stannis's army. Loras's anger (dare I say wrath?) at Renly's death is significant in the story as well - he kills several people when he finds out, and later his anger is important to bringing the Tyrells into the Lannister fold. Basically, in both stories we have gay lovers (probably) sharing tents on the battlefield. In each there is an incident where the less "important" one wears the other's armor to affect the course of a battle. One of the pair dies, and the other's emotional response to the loss has significant consequences. Seems like there is at least some influence from/reference to the Illiad there.
