I must gloat a bit at this point of our tale. While I don't claim to be a future teller or to have a crystal ball, I certainly know people from afar. Well it's not actually that difficult, there really are only so many different kinds of folks, and as much as we all like to think of ourselves as individuals and "special"; it's amazing how predictable we can be.
Case in point, David is a nice young man. So it's reasonable to think he would be attracted to Amy because she's, well, attractive. This I would attribute to his youth and hormones. The nice part of his character is what would lead me to believe that he would give her passes on her negative social attributes; oh you know like violence against the elderly jokes, abrupt sexual overtures upon first meeting, and such. Most "nice" folks like David behave just as he did when he first met Amy. Polite to a fault and forgiving, if not completely blind, to the other person's true and obvious negative behaviors; especially, a sweet looking individual like our little Amy Helmer.
Amy is predictable as well, even though she attempts to hide her true feelings most of the time; easier to predict than David even. Yes, Amy may not be as easy to read, but easier to predict. Why? You may ask. Well in my hobby of people watching I'm sorry to have to inform you that I've observed materially more negative and "bad" folks than the good ones like David. So one could say I simply have more practice at observing the people with darker personalities. Now don't get me wrong I'm not being overly pessimistic, it's not like I'm saying there is only one good person in a million. However, if there was a fulcrum scale, you know like the one used as the scales of justice, and you placed good folks and bad folks in their respective buckets; the scale would tip in the bad direction usually.
Off the subject a bit, but it always amazes me that most people lean towards being good on their own, but lean towards bad if placed in a large group of folks. It's like the mob mentality in a riot, I guess. But that's a completely different issue, so I'll stick to the task at hand.
My point being, as I suspected, Amy did "catch" David, both his eye and his heart. Only fools jump in and David did a high dive into the pool and was swimming with Amy for God's sake. If I had the desire to interject myself into David's life, I would have really only had one thing to say to him at this point. Good luck buddy!