as long as he is still acting normal and happy i dont' think there is anything to worry about. yeah it might have been a let down but i think your reason for not giving an answer was good enuff for him to accept that. answering during emotional state would not have been good anyway (as that happens in most cases), so asking him to answer when you are in a different state of mind is good idea. He should have been let down by that reason, if he cares for you.