Sorry this process is so overwhelming, but I want to give you some supporting perspective you are moving away from Infidelity by moving towards Divorce, specifically with regard to his addiction. I can attest that no awful consequences ever seem to stop them from being drawn to their addiction, over and over again. Sometimes after years and years in between, where they swear they are a different person and have you believing it. You are much safer emotionally doing whatever you have to do to remove yourself legally from this guy and his destructive choices.
In my life, after suffering D-Day 2 10 years ago - which came unexpectedly 12 years after my first gut-wrenching Discovery - I did go see a divorce lawyer but then got cold feet and stopped short of filing for D. Instead, I thought I was giving him yet another chance to get his head out of his nether regions. Because of course he was sorry and didn't want a Divorce and needed to use the barn on this place for his business, so I took pity on him and offered to do a property swap Post Nup instead of D, giving myself more time in Limbo. Among other terms and conditions of the Post Nup, I deeded him my former house in exchange for him deeding me within 30 days the place where we live now and surrendering his spousal rights to this place. I thought I was being so bold to do that at least, yet I hesitated to finalize the D, partly because I didn't want to be like my Mother or Sisters-In-Law, who dumped their addict husbands (alcoholics and SAs).
Fast-forward 6 years after that: we finally finished fixing up "his" house, he got it sold, and the closing was scheduled 3 days from what became my next D-Day! I walked in on him in my guest bedroom with a burner phone, laying there scrolling for whores again! As that had been my strict and often-stated boundary for him to continue living here after his multiple betrayals, out the door he had to go, that very night; to the camper, or to a motel, I didn't care! Instead of using the huge proceeds from his house sale to buy another house of his own outright, so he could live and do as he pleased with his sex addiction, he chose to hang out for 6 months in a camper outside my house, before I caved and allowed him back into a spare bedroom when it was 6 degrees F outside and he had no bathroom. Took pity on the man, again. He just didn't want to face his consequences, and I see in retrospect how I just enabled that outcome.
Two days ago marked 4 years since that betrayal happened and life isn't much different. Still doing IHS, as I can never be sure when or where his next betrayal will come from. He still won't LEAVE, though I could have him legally evicted if it came to that. I look back and see that all I ever managed by my "self-protective" decisions was to hang on to the appearance of staying together. Actually, I just made it easier for him to accept the negative consequences of his addiction when I chose not to follow through and finalize the D which I should have done!
Hope dies hard, I know, but I'm as alone today as I have been for the last 22 years. Don't let this happen to you! If I could give a bit of advice, it would be "full steam ahead, get yourself legally completely away from this person, or be prepared for a lifetime of Surprises..."