Did anyone but me find it significant that the first time we see Jack relieving himself, he's got his back to Ennis, but he's very close by, rather than walking into the trees for some privacy, thus probably revealing at least a part of his butt to Ennis sitting behind him? Ennis takes a glance, then consciously looks away. Then, the first time we see Ennis's butt, he's also very close by Jack, rather than going down by the river. In the book, I believe A.P. states that Ennis actually dropped trow right there next to Jack, at the fire, and Jack noticed that Ennis wasn't wearing any drawers or socks. Does anyone think these are precursors, setting the stage, sort of teasing each other with temptation, both incidents of which took place before the first tent scene?