It's most likely unintentional, but the cause of the car crash was Tim checking his cell phone while driving, mirroring the campaign to raise awareness about texting-while-driving and how it causes accidents.
Similarly, the victims in the car crash can be seen being tossed around the inside of the car because they weren't strapped in, showcasing the importance of wearing seatbelts.
Designated Hero: Thomas' actions seem very stalkerish, bizarre, and just plain unsettling throughout the course of the movie. Not to mention that he committed two felonies and in the end killed himself.
Esoteric Happy Ending: One of the people Thomas helps is a poor woman who has been suffering mistreatment at the hands of her abusive partner. He helps her by giving his fancy house next to the beach to her and her children to live in it. Thinking it a little bit through, he just left a big and expensive house to a person who very likely doesn't have the means to maintain it; worse, this woman already has a history of breaking up and returning with her abusive partner. Chances are this isn't going to end well.
Glurge: The movie tries to make suicide into a moral victory.
The car accident itself is made of this, and a truly violent end for all who were involved.
One-Scene Wonder: The real Ben in his scenes. It's implied he's the younger brother who is worried about his older brother's mental health after the accident. In the climax, he demands his credentials back and tries to reason with Tim to stop what he's doing. Towards the end, he and Emily both mourn Tim and remember him.
Tear Jerker: While the movie was pretty emotional overall, the saddest part was at the end when Ben kills himself so that his love interest can have his heart and live.
