For me, I noticed an odd interaction.
The more I felt down, sad, alone etc. then the more I would want to act out. So part of recovery for me is about not letting those feelings in too hard. Acknowledge them and move on. You have a lot of positive things in your life and it's great your girlfriend wants you. Quite a few people don't have that.
By dwelling on the negative things or getting stuck there, thus allows the part of my mind that will go to the porn to creep in. But then using porn just makes that worse and is digging yourself deeper into the pit and giving you more difficult emotions to handle. Which already we are not good at because when we get like that, we want porn for comfort.
So it's about breaking that cycle. Emotions are unavoidable, they are part of life and being human. With porn, it can make you feel like difficult feelings can be made avoidable. But that's the trap right there. The feelings are not avoidable and by using porn, we just make things harder because there is now more shame and guilt on top of whatever other problems you were having. So the porn becomes more appealing and so forth. In a downwards spiral.
Feelings can never kill you. You can allow your feelings to harm yourself if they stop you doing things either directly or indirectly. You cannot easily control what you feel. But that's what we try to do with porn. Instead, we can choose what we do with those feelings and how we approach our lives.
I often used to lie a lot about the small things. Are you OK? Yes, I'm fine. But actually I'm not. Now that might be an OK approach for people you work with or casual acquaintances. But if your partner asks, it's not going to work well to shrug it off like that. Being able to be honest with safe and supportive people is very important. I am worried about a whole bunch of things. Running away won't solve any of that. The first step to solving a problem is getting it all out visible and in the open.
Peace.