I wish I had an easy answer for you on this. My guess is whatever you do, it probably won't go that well because your friend won't be able to hear it (accept it) and may not even understand the ideas of boundaries and limitations. Very hard for anyone to hear and also harder again if it's someone you've known for some time and haven't said any of this to before Has your T given you some practical suggestions of how to approach this conversation; I know you don't want to take up more session time but maybe it's something you do need to walk through again with T before talking to your friend