zew, have followed your situation a bit and can certainly understand how tough it is.
You are handling things well for the most part and I am sure will look back at some and realize how much personal growth you have experienced. Good for you.
In terms of showing the friend the facts, given what you have already experienced with this friend what would you hope would be different after that discussion? Just something to think about before taking action.
Stay strong!
Me-48,W-51 M-22,T-24 S- 18,16,9 Feb-Jul '11 Away from Home, after initial B date Aug-Dec '11 Back at Home on couch Dec '11-now Same bedroom, room mates only Dec '14 W files initial D paperwork