I left today

I e been reading this subreddit foe the past year or so and i just wanted to say how sad i am to see how many people go through this. I (f28) finally left my soon to be ex husband (m29) this morning after he came to me about searching up bikini videos of girls on youtube and dancing videos. He claimed he “didnt” touch himself and still ejaculated while watching these said videos. All while i was upstairs, we are both in school and are both stressed. He did a full year of sobriety which i was extremely happy about because he truly was putting in the work and going to meetings, doing the steps, seeing a sponsor, a csat, and even after all that with my boundary of him doing that one last time id leave…and i did this morning and spent all day packing my things. Dday was july 2024 and had a few slips and i couldnt take it anymore so after his confession last night i told him i was going to be gone. I am incredibly heart broken that he completely jeopardized our marriage and all the work we put in to try to reconcile and it was going great. But this just told me everything i needed to know. Im now at my parents for the time being until i figure my life out but ive been crying non stop. I just cant put myself in a situation anymore where im constantly wondering about the “what ifs” and all the replays in my head of all the things hed done, and all the nightmares i am so tired. Idk if last night was a sign for me to finally free myself but im proud of myself for sticking to my word and leaving. Do they really change? Or get better? I really thought there was a chance. I feel like my world has completely fell apart and im so lost. Please leave kind responses.