As somebody who was cross-addicted to porn and is now in recovery almost four years, I can say that I used both for basically the same reasons...to relieve stress and anxiety. I drank around people. I used porn by myself. From what I learned in treatment and continue to learn in therapy, addiction is more of a symptom of a bigger problem. It's how we deal with that problem. Sometimes the hardest part is figuring out what that problem is. I too am bipolar, but I think that just made the final diagnosis harder. I don't think they really had much to do with each other.