Given Ennis's nature, this may also be the effect of loving Jack. Ennis isn't anything like as demonstrative as Jack, not just with him but also in his own life . He's a product of his time and class, and probably Western culture too, where "men are men" and all that.( Jack escaped all that for some reason -his parents?) He almost never shows signs of being aware of what would now be called his feminine side, except when it's awakened by Jack.