Hi ouch,
I feel your pain. I feel the exact same way (well, except when I am "seen", its because of my disability)
People don't seem to see those right in front of them, which is sad.
Also I totally here you about your school experience. When there was group work or "finding a partner", the teacher would almost always have to forecefully place me somewhere, otherwise nobody would voluntarily allow me into their group.
****hugs**** and talk to us again. We see you