Your pre-existing relationship as cofounders means that pursuing things will have costs on people outside the relationship itself. In particular, investors and

Your pre-existing relationship as cofounders means that pursuing things will have costs on people outside the relationship itself. In particular, investors and employees. You should have a plan for how to communicate this development. This may be a little old-fashioned, but I'd take a serious look at getting married before seriously dating. You already know each other well and trust each other, and it appropriately signals the seriousness with which you're approaching things.