Mind creating replacement for porn

after my longest period of abstaining from porn I actually managed to keep enough discipline to feel it was making a real difference for the first time as I’ve not really had the will power to abstain for long enough get any benefit. My mind certainly changed gear compared to when I regularly viewed porn as the images weren’t constantly being fed to influence my daily thoughts. Just recently thought I’ve found I’m becoming aroused by things I’d previously been immune to due to having plenty of overtly sexy material to process.
But recently I’ve been getting extremely aroused over even mildly sexy daily encounters and also wet dreams over quite inconspicuous reasons. I feel like my mind is creating a reason for me
To continue having regular sexual events by replacing porn with mundane soft sexual images and encounters. Do I just have a default arousal setting regardless of level of sexual imagery?