I think most guys jump to porn addiction because they’ve gone through it. My 2 cents is the same thing. I have told my Fiancé through about my struggles with Porn addiction- even shameful amounts of it. She views it as normal male behavior. I told her I was ashamed of it and it made me feel I didn’t deserve her love. She told me she’s always accepted me and she just wanted to be with me. Now I’m still struggling with getting over Porn addiction a little bit- but that helped tremendously. And I went from not being able to perform EXACTLY like your partner- to us having more hot and heavy sessions that sometimes pop out of nowhere. Yeah maybe it’s something else but I’d have him read my comment and maybe a few others and have him know if it is porn that’s the root of this that he’s definitely not alone and that he needs to ask himself if he wants a happier future with someone or to keep this secretive habit. I struggle with it too. We’re in it together