Boyfriend Watching Porn

My boyfriend and I haven't had sex in about 2 months. He says he isn't feeling very good about himself and even though I assure him that I absolutely adore him, he isn't comfortable with me touching him or having sex at all. I understand the drop in libido when you're going through things mentally, I struggle with depression and body dysmorphia. But I saw on his phone today that he has recently been watching porn and jacking off. I feel betrayed and annoyed. Mainly because now I just feel like he doesn't want it with me. Like now it's more of an us thing and less of a him thing, since he apparently is still getting off fine without me. Am I right in being upset? Keep in mind, I am SO emotionally supportive and provide so much space for him to discuss his feelings. It's becoming quite aggravating as I am (we both were) very sexual people.

Ladies?? Opinions???