Addiction

My boyfriend watches porn almost every day. He watches it in the shower. I only know because he likes to watch things in the shower but when it gets quiet, he is watching porn. I know I shouldn't have but I looked through his internet history and during that time in the shower, he watches more than six videos. I noticed that we have been having sex less and when we do he doesn't cum because it takes too long and I get tired and sore. (30 min +) Is this addiction or the start of an addiction? He spends about 30 minutes + a day, sometimes twice a day watching it. I don't mind but now I feel like I can't please him or he'd rather please himself.