Addiction!

Hiya, Iv never done something like this I just need a few opinions. Well me and my partner have been together for 4 years and Iv recently fount out he’s addicted to porn. I don’t have a problem with anyone who watches it. But it’s starting to bug me. Like every time I go out he’s on it like hello I was there like.. not only that he’s into really really mature older women and I’m only 22. We’ve been on and off for some time now he says to me it’s only fucking porn I know it is but 90% he rather have that then me. Please could I have some advice thanks