In reading your post about your feelings getting hurt I see self-sabotage going on there. His sister and her bf stopped by and wanted to go to dinner……..you didn’t have to go no one twisted your arm into that. After all his sister was there and could have easy driven just him and brought him home.
Then after the fact you state that you don’t want to keep hanging out with other couples, makes you feel depressed and unhappy. His response back to you is something you said you agreed with, it’s not sitting right with you that he is happy while you are not. You hurt so you want him to as well.
He was then very honest, brutally honest about never getting back together. I think this is what bothers you the most, his words make this all real and not just a passing phase that the two of you will work through.
What you perceive is mean is his truth and one you should believe.