Jack did seem to agree to " as long as we can ride it" right? Maybe at some point Jack should have given Ennis an ultimatum Not necessarily to be with Randall , but to find someone to share his " sweet life" with After all he's spent years waiting or is he too hopelessly in love with Ennis. Did Jack settle? Personally I don't Jack would have been happy with anyone else but Ennis. Just a thought.
Imagine, aintfoolin, I suppose your not the kind to be fooled, but would you agree to wander a little? What is this "sweet life", if not the "good life together", the little ranch with cow and calf operation... but Jack is so loose, absent minded when he tell that to Ennis? And when Ennis turn away he does not seem depressed, it is him who comfort Ennis! Maybe Jack the dreamer is anable to dream, to dream alone in fact. Jack is no man of ranch: big car, big watch, big ring... good life mean money and that is what he went in Texas to look after! The man of the little ranch, the Wyoming cowboy is Ennis. Jack is a very sensitive man, he felt the fantasm, the idea of the ranch inside Ennis: that is the dream of Ennis he is telling aloud... and that is the dream Ennis refuses!
Jack can't dream without someone, Ennis, or John, two different way to see the little ranch! two different dreams, life or death!
Jack is not only waiting, he is living by Ennis. Ennis does not let go to the heart of hid dream, inside the ranch, because of the violence he believe there is inside... so they live outside the ranch, in the mountain, in the nature, "way the hell out in the back of nowhere"... With the time Ennis get more and more "paranoďac", after the misunderstanding following the divorce he withdraws, he is closing upon himself and Jack is more and more famished, weakening. Jack could not stand anymore and, of course, he could not have dream he "sweet life" with any other man. When he see Randall, something sparkles in him, but it's too late: he see (I think) what could have been an other story, easier maybe, but Jack is
bound!