I know how you feel!
Like when you're standing in a group of people but you still feel completely alone. And sometimes it just seems like that horrible sense of utter loneliness will never go away.
I was recently talking to my T about this and we talked about some ways to feel included when you're feeling completely left out in a group of people. Some ways we talked about are by joining in the conversation or maybe doing something nice for someone in the group (like giving them a shoulder massage).
I know that it may not always make the feelings go away, but CAN you know that we are always here for you.