This was a cute little short story. I appreciated the sentiment and I thought that what Dave did for Amy was really sweet. When I think about this story, I just think "sweet".
I thought Amy's reaction when she finds out what's going on was a little extreme - it had been a year after all - but even short stories need a little conflict. The ending was appropriate. All in all, it's a nice little story to read on a day when you need to be reminded that someone cares for you and that there are still thoughtful people out there.