Jeeze, I wonder what caused this dude to snap. Girls cheat on guys all the time. Why did he go on a rampage this time? I wonder if he had a history of violence, abuse? Or was he truely a clinical psychopath, incapable of feeling empathy for others. Maybe he was a secondary psychopath, so absorbed by his own negative emotions that he felt he needed to kill people then himself.
This shooting has alot of unanswered questions.