Not that he can, but that he would choose that above all other quotes available. But since you are so offended, I might as why. Do you see being gay as offensive? I certainly am not offended by anyone who lives an alternate lifestyle from mine, as I see them as equal and valuable human beings with the autonomy to make their own decisions regarding their life. Obviously, you hold some degree of negative connotation to "gay" in your opinion, or offense would not be a reaction.
BTW...how do you know I wasn't asking if he was "happy"? Making quite a few assumptions there. All in an attempt to be offended by something that doesn't even concern you.