How short is too short when it comes to a man?

So your friend set you up on a blind date and tells you to have an open mind. Once you hear that it should have been your first indicator that something is amiss and they are trying to prepare you for a mild shock. You see him seated and he looks pleasant enough…until he stand up and then you realise you are much taller than him hence the greeting is stilted and awkward. You would love to head for the door but common courtesy dictates that you sit through the meal and at least act civilised.