This is a man just as intelligent and well educated as you are, with just as strong a sense of morality and right and wrong as you have -- and yet his morals are diametrically opposed to yours, and no amount of discourse between you would change either one of your opinions.

Still think that morality is absolute?

Believing that morals are absolute doesn't mean you think everyone's moral code is valid. Rather it means you think that there is one code that is correct, whether anyone follows it or not. I would not hold that the person you are describing is following the correct moral code, nor would he think that I am. Just because we have our own versions of morals doesn't make them relative. One or both of us just may be wrong.