Yes, I do think Ennis knew Jack was getting tired of these infrequent meetings , of the long drive to see him, then always having to hide somewhere secluded, and always being so cold. Ennis knew in his heart that a change was coming, and he didn't want to push Jack, but the truth had to be told. He had to let him know he couldn't meet him in August. So, it is with great trepidation that he appraoches the subject with Jack. This is, in my opinion, one of the best acting jobs I have ever seen. Ennis shows his reluctance, hesitates, chews the cuticles around his nail. looks at Jack from his head hanging down. He knew this wasn't going to go down well with Jack. He probably didn't expect quite as much as Jack hit him with, but he knew it would be bad -- and, Boy, was he right! Jack let him have it with both barrels. I felt so sorry for Ennis, just standing their, looking down, ashamed, until his dander rose up inside him and he let Jack have it back. This is such a pivotal scene. It sums up what 20 years really meant to these two men. Lots of disappointment and unfulfillment for Jack, lots of turmoil and indecision and loneliness for Ennis.