As for the second, I respectfully disagree. I don't think you say "Have a nice life!" by any means, but I do think sometimes you have to say/project some version of: "I understand this is tough." or "I agree; this is tough on all of us." or "I can see how difficult that must be for you."
When I advocate being friends while in the DB mode it is of the "tough love" approach. It's business like, it's centered on my best interests, it's brutally honest and it's loving at the core. The reason it works is because like what Gucci preaches is that I am "moving on," I am a better me - secure and confident (did the work on myself), I won't repeat/tolerate unhealthy relationship patterns, I am leading myself out of this mess and if you want to be married to me great hop on board. One of the hardest things I had to do was hire a lawyer, scared me to death. My biggest screw ups around my wife involved legal stuff. But I know that playing legal hard ball back showed that I was not going to roll over. I know it scared my wife as well because it was part of the "moving on" process. Your friend sues you, how are you going to act? I understand the confusion and fine line this represents. I am getting a knot in my stomach just thinking about this. The nice guy, friend in me had a hard time taking this step. My wife moving out/filing D papers was not a "friendly" gesture but it showed me she was moving on. It was actually a loving gesture for herself and in the long run for me. She broke the unhealthy patterns. Moving on means I care enough about myself to take care of myself. We project that out as being selfish, in a fog, and having a wall up. Moving on is saying to yourself that you matter. You are moving on to a healthier, wiser, stronger and richer place for yourself. People notice movement, the waiting place is a slow death and not attractive. Healthy, vibrant movement is a deal-maker. Move is a verb so go get busy.
Cheers
M22,H45,W45 S21/18D12 Retain faith that you will prevail in the end, regardless of the difficulties and at the same time confront the most brutal facts of your current reality, whatever they might be.