It's hard to start a business. That's why many of us turn to someone else – a friend, a colleague, someone you just met at an accelerator – to cofound a business with. This is a person you'll end up spending more time with than your romantic partner, and getting it right is so important for your startup's success and your personal sanity. This class will go through the traits that make a good co-founder, and how a bad co-founder relationship can look like.