I don't think it was over after that last meeting. I do believe that something died in Jack seeing Ennis break down and unleashing all of that frustration, but there is that whole nothing ended, nothing begun, nothing resolved. Had Jack not died, I think he would have met up with Ennis but I think that the last meeting would have been a turning point one way or the other in that Jack would have forced Ennis's hand about the relationship. But that's just take on it.
I believe he was murdered. It was my first impression and I can't shake that. I want to believe that it was an accident because that would be a lot easier on me but I can't seem to make my mind go there. There is also the part in the SS where Ennis is at the Twist ranch and it says "So now he knew it was the tire iron". But as with everything that's subject to one's interpretation and is by no means a confirmation one way or the other. I kind of like the ambiguity because it puts us in Ennis's shoes not knowing the truth. Be it murder or an accident, at the end of the day- Jack is dead and that is what rips my heart to shreds. :\'(
I am with you, LuvJackNasty. Sometimes couples in a relationship grow apart or mature together. I think their last scene was a turning point, and it could have gone either way, with Ennis not being able to continue, as evident by his sitting alone, yet content, eating his apple pie. Ennis, we need to remember, grew up lonely and I feel that it is his natural state, when left alone. It is why Jack had such an impact on him. Jack on the other hand loved Ennis, and given half a hint of being together, always, would redline back all the way. If he received the card from Ennis to meet in November, he would be there. No doubt in my mind. And their meeting will be as passionate and loving as ever. And I think the conversation will eventually lead to, what are we going to do now. At this point, I believe Jack will propose again, and Ennis will now be free, materially and emotionally, to accept.
I am glad the movie left the cause of death ambiguous. Reality, as you said, is often uncertain. Dealing with uncertainty is just a way of life. We are often spoiled with artificial certainty, boundaries that serve no purpose. The ambiguity in this case, serves to highlight Ennis' emotional response much more than a certain murder or a definitive accident. In any case, as you said, it is not the cause, but the death, which is tragic, which caused so much pain in so many around the world. And yet, it is also the resolution of this death, through the sequence of Ennis' search for answers, for closure, that brought at least this one cowboy some peace. I am forever grateful to everyone in the making of the movie. You all have no idea what you have done.