seek help when he needs it.
Lef me clue you in on something important..... Lots and lots of men, when caught using porn and online sex workers (and sometimes in person sex workers) will say it's an addiction.
Boo. hoo, an addiction, I need help, you'd be a big meanie to leave me, I need support, poor me.
It's BULLSHIT.
They just like using using porn and online sex workers. They like interacting sexually with other women/multiple women, they like instructing other women to do sexual things, they like accessing/receiving explicit images and videos of other women. They like wanking interactively to other/multiple women. They feel entitled to do it, they don't want to be faithful - even "electronically".
That's what they enjoy. That's what they think they're entitled to. That's where their line for fidelity lies.
(Though they wouldn't take the equivalent behaviour from their wife or partner, oh no).
It's not sex addiction, or porn addiction ..... That's mostly just a line to keep you there, make sure they don't get chucked out, not lose the many benefits of the relationship, not have to explain to mammy and daddy why they're split up and a single parent (if they can be bothered looking after their own kids) etc etc.
It's a line.