The shooter's last text message ended with a sad face emoticon.

One more bit of evidence of what expression in the form of emoticon really means.

"Jake was never the violent type. He didn't go out of his way to try to hurt people or upset people. His main goal was to make you laugh, smile, make you feel comfortable. I never would have guessed him to do anything like this ever," she said....

The last time she saw him, which was last week... "I just talked to him, stayed the night with him, and he just seemed numb if anything. He's usually very bubbly and happy, and I asked him why, what had changed, and said 'nothing.'..."

Sansburn said the last message she sent Roberts was a text, asking him to stay, and saying she didn't want him to leave. He replied "I'm sorry," with a sad face emoticon.

Emoticons are used to manage the emotions of the recipient. They don't reveal what they purport to reveal — the writer's emotion — and should be viewed with suspicion.