Zoo, why don't you follow up with some validation? Tell him you appreciate his fortrightness and would like him to continue to trust you with his thoughts and feelings, even if you may not like them. And tell him you will learn not to react to them in time.
And it would not hurt if at some time in the future he reads "Not 'Just Friends'" by Shirley Glass. In case you have not read it, it shows how easy it is to go down the slippery slope of an A and teaches some techniques to recognize danger and avoid it.
Just a thought...
"You don't throw a whole life away just 'cause it's banged up a little"
Tom Smith in "Seabiscuit"
