I caught my dad cheating on my mom

Ive caught my dad cheating on my mom. he was going to the massage parlours. I found the texts of him setting up the appointments. I confronted him he said he would stop. Today i caught him again. And i told him either he has to tell my mom or I will. I was just trying to scare him and I didn’t actually think hed do it but he did. They are now getting divorced. I just ruined my life and split my family apart. This is the 3rd chance I gave him. I tried to keep it in and hoped that he stopped but he didnt Now i feel responsible for ruining it and wish i would have not said anything. He said the bed room has been dead for 10+ years and thats why hes been doing it. I really tried and i warned him the next time hed do it id tell my mom. I guess i just never expected him to actually tell her and now i feel guilty and carry the weight of ruining everything. They’ve been married for 30 years.

Update for added context: Im his 24 year’s old Son and only child. Have a degree and a high paying career. I never went through my fathers phone. I happened to be beside him when he received a call from someone very late at night and he appeared distraught. He confessed he was being sextorted and came clean about the escorts. He asked me for help and i took care of the sextortion that was happening to him and again did not say anything to my mother. This was his first chance that i gave him out of 4. After this we both comunicated and came to a agreement where he promised he wouldn’t do it again and it happened on 4 more occasions where he was caught with escorts but that was only the amount of times he was caught this had long been going on. I gave him multiple opportunities and I even helped him figure it out and gave my advice and heard him out and had sympathy. But I reached my breaking point and felt betrayed after he promised me in tears crying not to tell my mon and that he was done. And i warned him again that if he did it either i would confess to my mother or he would. My father taught me that as a man all you have is your word. And he broke his word to me. This story is much more complex than i have made written it. I saved details for the protection of my family but id thought id clear the air as i am not a nosy son. And i repeat only found out because of a phone call he reviewed infront of me.