There is something to me so sexy about the scene where Ennis is just holding Jack from behind. It's just so beautiful and tender and romantic, not leading to sex, but to me, it's just for the pure enjoyment of being close to the one you love. Ennis had really let his defenses down at this moment, evethough I know he wasn't looking at Jack and there are so many more implications that have been and can be discussed. This was one time where Ennis was the initiator. And I just think this moment is very romantic and sexy.