Daniel is really unlikeable
I didn't believe for a second that a girl like Lauren would have any interest in Daniel. She was beautiful and mature beyond her years. I could see her liking a much older, handsome boy (and they would have noticed her, too). When I was 13-14 all the girls liked boys who were 17-18. No one could stand the little pipsqueaks in our own age group. Also, they were usually shorter than us at that age. Boys mature more slowly.
Daniel was rude, sullen, arrogant, pushy, obnoxious, lacking in charm, no sense of humor and not remotely cute. Plus, the guy playing him was a terrible actor. This movie would have been so much better with an actor who had chemistry with Diane Lane.
That said, I am in love with Diane Lane in this movie! She's perfection.