Trouble is, there's absolutely no way to know if the girls (and I mean girls because most are barely legal) are actually consenting. It's been widely known that they are forced to record consent videos against their will.
The other thing... They are all clean shaven so they look like pre-pubescent GIRLS.
think about it. It's sick. And it creates unrealistic expectations in men as to what real women are actually like.
It's actually been scientifically proven that porn has negative effects on a man's brain, so while they think they've had a release, the longer term effects are that they're more Moody, more likely to be distant and grouchy and grumpy, some get aggressive. Many also display self centered/entitled behaviour.
It also goes round in circles, they go back for more thinking they'll feel better. Some will get addicted. But it just continues to make them worse and in turn, worse partners.
It doesn't matter how he got to it, fact is, he did and quite frankly, men lie and gaslight when caught out. I'd never believe what he says.
Personally, if a partner can't man up to be open about his feelings or be romantic with his REAL LIFE parnter and would rather hurt his partner and go behind her back to wank off to barely legal sluts online, he has a bigger problem that needs addressing.
Once trust is broken, its very hard to get back. Obviously depends on your relationship, but me personally, I've struggled to trust mine fully again and he's done nothing to actually earn it back. Holding my hand or opening doors for me isn't earning trust.
You need to decide whether you actually mind or don't. Then you need to tell him what that is so it's clear between you whether you feel its OK or not ok.
I get that some partners are absolutely fine with it, others (like me, obvs) are not. So there needs to be a wider discussion so you're both on the same page.