I have a friend in school that is not diagnosed with ASD, just as I'm not, but he shows a lot of symptoms of it. He clearly lacks some social skills (I'm the only one in class who tolerates it) and sometimes leads one-way conversations about his favourite topics, at these times I listen to him, sometimes not very carefully, but I don't interrupt him and let him say what he wanted. The two of us separated from others from class when it comes to hanging out and became good friends. Then he invited me to his birthday. Apart from me, he invited all class, but few people came and also invited some friends from his sports club. At his party, he was a different person from one in school. He, two boys from class that came (at some other times these boys insulted him) and his friends from the sports club had great fun while I was out. At the party, he was a typical teenager, while in school he is a person very similar to me and that's why I thought he might be an aspie. He knows about Asperger's syndrome from Greta Thunberg, but he and I never talked about me or him having it.