Today I managed to get about 3 pages written. Nothing on those 3 pages had anything to do with the hero and heroine knowing each other before. So I'm thinking maybe they didn't know each other. The hero and heroine haven't sent me any other "We knew each other when..." vibes, so I'm going with my original idea instead.
As for conditioning myself to write during shorter chunks of time, I'm getting there. Today I took my mini-notepad and wrote during my lunch/recess time at school. It didn't feel like much, but I got 1 1/2 typed pages out of it! Kelly said it takes 3 weeks for something to become a habit. I think I'm still on week 2. I really do want to learn this behavior. Of course, I'm still thinking of spending a couple of HUGE chunks of time on the book this weekend.