Quit porn Addiction while in a relationship

I was a Gooner since I was a Teenager. Tried NoFap almost a year With Constant relapses. Never felt any benefits, Like they Said. Now I got a girlfriend During a good Phase. My sexlife was so fucking good, cant believe it. But when we didnt See us, I Masturbated. It silently Slip into the old addiction. Now I wont get Hard during Sex and we argue a lot because of this. Im clean for a week now, but didnt See any Boner, just in the Night. Do you think Quitting porn while You have normal Sex is as easy as you are Single? Also never felt any benefits, do you think I could get them but dont feel them? And now, do I get some while im a boyfriend?