[sabj]

Well, many say that a start-up is like getting married. Therefore, it would be a lot like polygamy...?

This said, so many jobs for 23-28 year olds who are high-achieving driven people (but maybe not entrepreneurs) have similarly crushing hours, so, it's not like start-ups are such an unfair choice.

I don't know from experience, but I think #1 would be talking with your spouse and making sure at least there is a baseline understanding.