Well said as you asked in your 1st post:
I guess we're pretty much agreed that Jack has been cruising Ennis, since, maybe the first time he laid eyes on him. He takes one look at Ennis, and drapes his body beautifully over the side of the truck...but there is no reaction. Calls for a change in plans, or a plan, or a postponement of a plan--or what? Exactly when does Jack decide...to move?
........
Or is this it ?