I think I've come up with a way to tell if someone you're dating is HD or LD. When you are out having dinner with a new guy and generally things seem to be going well, with slow intent reach over and take an item of food from his plate and eat it. I think his reaction to this behavior would be pretty indicative of his drive. If he objects in any way probably LD or ND and selfish. If he does a double-take but then seems ok with it he would probably be ND or LD feeling HD for you. If he reaches right over and takes something from your plate too, you know you've got a keeper.
"Tell me, what is it you plan to do with your one wild and precious life?" - Mary Oliver
