How do I forgive him about porn

I am looking for actual advice on how to forgive, because that is “what relationships are about”.

I made it VERY clear porn is a no in my relationships. I am not okay with it all and I have the right to be. My longterm bf agreed and has been lying to me for yearsss about not watching porn. I just found out how much he actually does.. and OMG. He says he watches stuff that reminds him of me because he loves ME- which literally makes no sense when we live together and I am right there. Anywho I am trying so hard to get over it but the thought of him finishing to multiple women on MULTIPLE occasions while I was ONE room away makes me sick. He would sneak off to the downstairs bathroom while I was asleep. Whether it’s their job or not- they are literally just another human like anyone else. This might have to just be a deal breaker if I can’t figure out how to move past it- anyone have advice? anyone have a similar situation?

Edit. I work part time, I have the weekends off, and usually only work 4 days a week, 2-4 hours a day. I am confused why you think his only other option would be cheating when I am gone for that little amount of time. And 98 percent of the porn searches were timed when I was in bed with him-or I thought he was in bed with me. Ranging from 2-7 am. I am into non-consensual-consensual sex, so he knows I don’t mind him sticking it in while I am asleep.(he is okay with this and did it alot more when we first started dating) But he still snuck off and beat to a video of a stranger that “reminded him of me” “because he loves me”.

Edit. He has sooooo many pictures/videos of me AND movies we have made of us having sex. So I am CLUELESS why he felt the NEED to seek satisfaction from other women/woman’s bodies