Daisybelle7, that sounds like a very awkward and difficult situation with your old friend. I have an old friend who lives a couple of hours away, not being judgmental and not going through the details, who's wife, who I also considered a friend, finally made the decision to request that he move out and got a restraining order against him for fear of the safety of herself and her kids. You want to help your old friends but also have to consider the "toxic" effect of being associated with them.
On the other hand, it makes me think about some of my behavior in the past.