The issue isn't trust, or relationships. The issue is lawyers and how being dragged into litigation will affect the business. If the relationship goes into divo

The issue isn't trust, or relationships. The issue is lawyers and how being dragged into litigation will affect the business. If the relationship goes into divorce, you can expect having to answer subpoenas, depositions and other discovery yourself. Now your legal budget just jumped, and you can't accurately budget for litigation. If the significant other of your partner is married, maybe their soon-to-be ex-significant other involves you in litigation as well. Maybe the scorned individual believes that your business isn't being run on the up and up. So they report you to the SEC, IRS, FBI, who knows? There is a buttload of woe awaiting you in case any of these things happens. So in this modern world, at least in the United States, your business partner is exposing the business to greater risk because of his actions. Recognize that your partner should shoulder the additional costs, because there will be additional costs and lawyers. If you're lucky, everyone is an adult and keeps the personal personal. But that's more aspirational than reality.