If you're a co-founder, get legal advice. Don't rely on what people have to say here. Speaking from experience as someone who started a business with a friend,

If you're a co-founder, get legal advice. Don't rely on what people have to say here. Speaking from experience as someone who started a business with a friend, things can get ugly when you want to part ways; even in the very early stages. Sorry to hear that it didn't go well, and best of luck in your future.