OMG! There is just too much to love in that whole scene!
From Ennis reading the postcard,
His sitting by the window waiting,
The big smile on his face as he runs down the stairs,
The kiss of course, and the nuzzle made me melt!,
And Ennis being all smiley and giddy when when Jack meets Alma.
But when the boys take off, the whole mood changes. I feel so bad for Alma.