We split it 50/50 but with an extra, if any of us decide to leave the business, you'll have to give the opportunity to the other to buy your share in one year b

We split it 50/50 but with an extra, if any of us decide to leave the business, you'll have to give the opportunity to the other to buy your share in one year before selling out to investors and others. This way the most interested parties keep control of the company.