Oh no, no no no. Your life partner is there to support you, personally, through the difficulty of starting and growing a business (if you're lucky.) They should

Oh no, no no no. Your life partner is there to support you, personally, through the difficulty of starting and growing a business (if you're lucky.) They should listen to you and maybe even give you some gentle advice. But when they show up at work and start meddling, there's no way that will go well. Why would you even want that? It can't be good for the organization--because they are outside the normal chain of command and thus not really accountable for their actions, and because they have power not earned through an objective process--and it can't be good for your relationship. Just don't do it.