At my first viewing of the movie, I thought they could have left the first tent scene out, or rather, could have just let us know what happened in a more subtle way...
Even though i felt that way, the movie still had a hold of me and affected me instantly.
After several more viewings, my feelings did a complete turn around, and I wanted more...wanted the love scenes to be longer and more detailed, wanted more scenes of affection, wanted to hear them speak to one another as lovers, there is just not enough...never enough.
I think Ang has given us the same frustrating feeling that Jack felt, of there never being enough, and once Jack was gone, the feeling that probably Ennis felt, that we would never see them together again.