Is it right to call someone gay?

Though people may describe themselves by using terms like “gay” or “queer” which are commonly used in today’s culture, as Christians who believe in man created in the image of God, we should ask if these cultural terms are, in fact, true ontological categories of the human person, in accord with the blueprint of human existence.

http://www.firstthings.com/onthesquare/2013/04/homosexual-orientation-or-disorientation