Look, I understand, I have social anxiety, but you just need to say what you want and move on. Of they don't like it, then they don't like it - who cares?
That person desperately needs someone in their life to tell them the truth.
“I am done hanging out. I need to be alone now”
Some people are autistic and as an autistic person myself believe me when I say there is like one in ten thousand people who will actually tell the truth, and they only do it once in a blue moon.