Broad strokes - same as any other thing in a relationship - set expectations, set boundaries, over communicate, show appreciation, set daily / weekly / monthly catch-ups, set aside some non-flexible together time.<p>Specific to startups / starting a company, have a series of serious conversations about:<p>1. how much money you are going to set aside to get it to work<p>2. work life balance during the week, during the weekend, during "evening hours"<p>3. go / no go decision points (funding decisions, customer road map, founder / employee relationships)<p>4. social life<p>5. how much they want to be part of the company (as you will be living it, they'll be there to listen, but do they really want to listen 24/7/365?)<p>6. your goals, their goals, your goals together and how they match up with your goals for the company.