I’m sorry you struggle with that as well. I never had problems in hospitals but in general social situations I have issues. I agree, I have seen it happen to others but it happens to me way more. Basically it just seems like people see me as someone to hang out with out of boredom or convenience untillnsomething better or someone better comes along. And I am sure it is way more common among many friendships, it is just not seen as often. But I believe it happens a lot.