By 'will' do you mean a desire or request, or do you mean 'document giving possessions to family and friends after you die'?
If #1: Dead or alive doesn't matter. It depends on the morality of the request. If it didn't violate any sense of 'goodness', then I'd try to do what they wanted.
If #2: Probably not.
Could you answer your boyfiend's / girlfriend's questions using a lie-detector?
