Answer:
Being invested in something means that you have a personal or emotional interest in it, and you are committed and involved in it for the long-term. You might be invested in the financial performance of a company, a political issue, a sports team, or a relationship. If you are invested in something, you are likely to put in a lot of time and effort into it, and you are likely to care a lot about the outcome, whether it is positive or negative.
(Or like how I’m invested in your mom )