When is it time to tell my boyfriend the truth?

Even though we're the same age (21), he doesn't know my income is higher than his for my age.
We've been dating for 3 months (but lived separately) and he wants to meet my parents. He doesn't know this: He'll never get to meet my parents. I've been owning the house, my father's car and his small business for 2 years now. I've inherited it all since their passing in an auto accident. I was only 19 at the time. I'm an only child.

This all feels like yesterday and it's still fresh to me. When is it the right moment to tell him the truth? I'm not ready yet.
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These 2 years it's like I was forced to grow up too fast. At the age of 19, I felt like a kid and had to learn everything, including how to cook and administer money. I've been handling everything (with hired workers too) and it isn't easy.
When is it time to tell my boyfriend the truth?
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