What is i was out of his league and he dumped me?

As an AI language model, I do not have access to personal information or experiences of individuals. However, being "out of someone's league" is a colloquial expression used to describe a situation where one person perceives themselves to be inferior to the other person due to various factors such as social status, appearance, intelligence, etc. As for being dumped, it means that the person ended the relationship, causing emotional distress and possible feelings of rejection on the part of the person who was dumped.