My boyfriend uses porn instead of pictures of me, why does it upset me so much?

So my boyfriend and I had a great sex life, almost every day, when apart we'd use snapchat and send pictures.
But he's recently started working in the public sector, does night shifts, different shift patterns every two days and everything has shifted.
We've been less intimate from his end, and he's stopped instigating snapchat sessions / pictures.
So I confronted him about it as I was feeling confused and he told me that he watches and uses porn.
I asked why he doesn't use my pictures and he said because they're far back in our shared media and that he doesn't feel comfortable having them on his phone.
I've told him that the shift in intimacy has made me feel insecure and anxious and he says it's nothing to do with me.
I guess I'm struggling with the fact that I am always up for that sort of intimacy, and whenever we're apart would love to exchange pictures and have snapchat sessions, but he does not want to anymore and uses porn instead?
When he shared that he watches porn he said he felt ashamed and embarrassed.
Please advise. I just feel very confused. I know he loves me but the intimacy stuff is making me feel consistently rejected and unwanted and like the porn is better.

So my boyfriend and I had a great sex life, almost every day, when apart we'd use snapchat and send pictures.
But he's recently started working in the public sector, does night shifts, different shift patterns every two days and everything has shifted.
We've been less intimate from his end, and he's stopped instigating snapchat sessions / pictures.
So I confronted him about it as I was feeling confused and he told me that he watches and uses porn.
I asked why he doesn't use my pictures and he said because they're far back in our shared media and that he doesn't feel comfortable having them on his phone.
I've told him that the shift in intimacy has made me feel insecure and anxious and he says it's nothing to do with me.
I guess I'm struggling with the fact that I am always up for that sort of intimacy, and whenever we're apart would love to exchange pictures and have snapchat sessions, but he does not want to anymore and uses porn instead?
When he shared that he watches porn he said he felt ashamed and embarrassed.
Please advise. I just feel very confused. I know he loves me but the intimacy stuff is making me feel consistently rejected and unwanted and like the porn is better.

So my boyfriend and I had a great sex life, almost every day, when apart we'd use snapchat and send pictures.
But he's recently started working in the public sector, does night shifts, different shift patterns every two days and everything has shifted.
We've been less intimate from his end, and he's stopped instigating snapchat sessions / pictures.
So I confronted him about it as I was feeling confused and he told me that he watches and uses porn.
I asked why he doesn't use my pictures and he said because they're far back in our shared media and that he doesn't feel comfortable having them on his phone.
I've told him that the shift in intimacy has made me feel insecure and anxious and he says it's nothing to do with me.
I guess I'm struggling with the fact that I am always up for that sort of intimacy, and whenever we're apart would love to exchange pictures and have snapchat sessions, but he does not want to anymore and uses porn instead?
When he shared that he watches porn he said he felt ashamed and embarrassed.
Please advise. I just feel very confused. I know he loves me but the intimacy stuff is making me feel consistently rejected and unwanted and like the porn is better.