The scene is when Ennis comes back to Alma after spending a night with Jack at the Motel Siesta. After announcing to her that he and Jack are spending a few days out 'fishing', Ennis starts to pack and the following scene unfolds. Let me paraphrase the exchange between Ennis and Alma:
Alma: You know, your friend could come up and have coffee...
Ennis: He's from Texas...
Alma: Texans don't drink coffee?
[Ennis proceeds to ignore Alma...]
When Ennis exits the house, Alma looks out the window and overhears the following exchange between Jack and Ennis (my paraphrase):
Jack: I'm starving...You want to get a bite to eat?....
Ennis: Yup...
Ennis was so possessive of Jack that he refused to have Jack invited up to the house to get something to eat, even though he most probably knew that Jack had not had anything to eat and was hungry!!!!! Why did he refuse? Because he did not want to share Jack with anybody -- EVEN WITH HIS WIFE!
This is an INTENSE and POSSESSIVE love!
I find this to be an interesting take on this particular scene.
What leaped off the screen at me was something totally different. It was so obvious to me that Ennis was going out of his way not to touch Alma. He squeezed by her several times and did not tough her. When he came into the house he didn't say hi and hiss her. When he was finally ready to leave he sort of stood there like he didn't know what to do next and finally kissed her on the cheek, which is more than he did when he almost forgot the creel case.
So, I thought the movie was showing me the beginning of the end of Ennis and Alma. Never occurred to me they were showing Ennis's possessive love of Jack. If anything, I would go along with Ennis not wanting to show how much he trembled from anticipation around Jack in front of his wife.
I hope this isn't off topic, but, for a young man who was so paranoid that someone might find out about his relationship with Jack, he was awfully careless around Alma.
He takes the day off where he wears his best shirt, paces around the apartment, drinks heavily, smokes to the point of chain smoking, sits in the window waiting for...who...another man. And when Jack finally does show up Ennis bounds out of the house like someone is outside giving away one hundred dollar bills and bounds down the stairs. Did it never occur to him that with all that day's behavior Alma just might come to the door to see who this Jack Twist is and to greet him as a good wife might?
Then he tells Alma he might stay out all night because when they get drinking and talking... What, Alma doesn't know the bars close at a certain hour? Where was he from the time the bar closed until the next morning, and if he had been drinking and talking all night, why wasn't he drunk when he did get home?
Ennis's behavior did everything to tell her something was very strange about this relationship with Jack Twist. I'm not sure she had to see them kissing to come to that conclusion. Ennis was surely very reckless for a man who didn't want anyone to know.