Another thing about the yin and the yang that are Ennis and Jack - I see Ennis as being the type that's good with the day-to-day - strong work ethic, steady, doesn't sweat the small stuff. And I see Jack as being the type that's good in a crisis - as evidenced in his nurturing ways with Ennis. This is very much like my husband and me. He is very good at keeping things in perspective - at "staying the course." And while he keeps a cool head in a crisis, he's not the most nurturing fellow - he kind of pulls back, in fact, I think to keep from getting too intimate and maybe rejected? I'm the one who's spontaneous and fun and who needs to be steered back onto the path from time to time from day to day. But if you're in trouble, I'll hold your hand and pull you through it come hell or high water.
Do you ever notice how it's very rare, if not impossible, to find one person in which both these qualities reside? I have to admit that my husband has really let me down a few times when the shit has really hit the proverbial. When my Mom died suddenly, for example, he was on a trip for work in another state. I called him that night. He could have come home that night or even the next day and not suffered any repercussions, but he just thought that "there was nothing either of us could do about it" where I was - her funeral wasn't for a few more days, and he said when he got home we'd go together to where she was going to be interred. Thing is, I wanted to be with my brothers and wanted to go right away. I thought I could help them get through it just by being there with them, you know? When his Mom was dying of breast cancer, we drove up there every other weekend, the two of us with a two- and then a three-year old, for nine hours each way. I gave up all my vacation days those two years to do that. But the thing is it didn't bother me. To this day, he's still wicked impressed with that. I never gave it a second thought. Again - Ennis, good at the day to day; not so good in a crisis. Jack, not so good at the day to day ("Jack drank a lot..."); very good in a crisis.
Trouble is, if you have to pick, that doesn't just come in one person. So your best bet is to pick someone who's the least like you in that respect. As Jack and Ennis did.