You _can_ tell someone. Tell you co-founder if you have a strong relationship.
The "end-game" for burnout is complete dysfunction and possibly worse for an extended period of time. If this happens the first thing your co-founder will say is "Why didn't you tell me?"
The "end-game" for burnout is complete dysfunction and possibly worse for an extended period of time. If this happens the first thing your co-founder will say is "Why didn't you tell me?"