Nobody likes to be forgotten or left behind, whether on purpose or by total accident. When someone you know is organizing an event, and you find out you are not invited, even if it was unintentional, it is such an awkward conversation to have, that you often don't know how to approach it. What are you even supposed to say? “Hey, was I not invited because you don't want me there, or did you just completely forget I existed?” However, if something like that does happen to you, it is still better…