I have to say I am solidly in the camp of "It does not matter." He is who he is and labeling it doesn't change anything. Getting hung up on a label serves no purpose but to keep us stuck. If only we could DEFINE it, we could CONQUER it! Sadly, this doesn't play out in real life.
Everyday we have to ask ourselves if we can accept the people in our lives as they are right now, and assume they are not going to change. If the answer is no, it is US who must make changes, not them.