I am getting little over excited and forget things so here's another.
Ennis is the one who is scared of the possible repercussions of them living together, and he is the more 'physical' partner (i.e. fight scenes, shoving Jack during the last fight, and even the FNIT scene, he quickly takes control). But in the motel, he is cradled in Jack's arm. He is being held as opposed to holding.
And here comes another!
When they part after the summer, and Jack asks if Ennis is 'doing it again' next summer (doing what?
!) Seriously though, the emotions that flit over Jack's face, in particular, the fact that he raises his eyebrows after saying "but I might be back" is so amazing- I think he is opening his heart and almost begging Ennis to come too.