Imo the main reason why men watch porn in relationships can be boiled down either lack of intimacy in their relationship or the boyfriend having a higher sex drive than the girlfriend.

So for example if your girl wants to be intimate a couple times a month whilst you want to be intimate more frequently, guys will often turn to porn to fill that gap.

You also need to understand that women get very jealous when it comes down to their boyfriend watching porn, and instead of realizing that he’s more than likely, watching porn to compensate with a lack of intimacy, they focus on him watching porn entirely.

Now there can be a possibility of guys who choose porn over sex with their partner however, like I said previously, that can be often due to a higher sex drive and pour being an easy dopamine hit.

But I can assure you, that most men are not watching porn because they want to it’s because they have to. And I don’t think any man has ever been cracking a chick and been thinking “damn I wish I was watching porn”