[illumination]

I don't think you have to decide whether you're gay or straight. You are what you are and for many people, if not most people, it's a lot more complicated. The labels gay and straight are just words, very much culturally defined (e.g. in ancient Greece it was the norm for men to be what we would call bisexual, but they didn't have that word as the categories were defined totally differently) and not everyone is going to fit into those categories. The main thing is dealing with your addiction, not fretting about what off-the-shelf category you fit into.