There is nothing wrong with looking at gay porn. Some people view gay porn out of curiosity. Others view it because they are attracted to what is happening in the photo/video. Do not be ashamed if...
porn is something that is made to arouse people and gay porn is made with two actors of the same sex or made to arouse people who like people of the same sex.
You are gay if you are primarily sexually attracted to members of the same sex. I would wonder why a straight person would watch gay porn? but this does not mean that they are gay.