hi barb, i know it may sound cruel to you. but u can look at it like this if he stays with u you know he may end up having a heart attack from using cuz u know he wont stop at your house or you can tell him he has to leave where he MAY get pneumonia, if he chooses to literally sleep out on the streets. Shelters programs and rehabs are very warm. Consider giving him 2 weeks to set something up, that way it is his lack of finding a place that causes him to be "out in the cold" rather than you feeling like its your fault he has no place. It will then be HIS fault. I understand how you want to find a place for him before you tell him to leave but that is his job as an adult to do. Its very hard for us to make our addicts do what we want them to do.Like i always say: you can bring a horse to water but you can not make them drink. Best wishes and hope for you barb.