There is one thing I agree: threatening people should be done _only_ as a last resort, and only when you are in a position to threaten. Also, if you do it you b

There is one thing I agree: threatening people should be done _only_ as a last resort, and only when you are in a position to threaten. Also, if you do it you be prepared to end whatever relationship you have, especially if the threat is unsuccessful. But in this case it doesn't sound like there is any other choice.