I'm going to kill myself. Suicidal people are in a great deal of emotional pain and they want to find a solution to get out of that pain. Suicide is NOT romantic nor is it painless. Suicide is NOT a form of manipulation, and should be taken very seriously.
Suicide is a very complex behavior.
There are a lot of factors which go into making the risk for suicide greater. One factor is grief and loss. People in crisis tend to be experiencing a recent loss, which is not limited to loss by death. If you suspect that the person is a high risk for suicide you need to get him or her immediate professional attention. It would be best if the person themselves would sign themselves into a treatment program.