Ex comes clean months later [cuckold]

So this story happened years ago. My name is Jay (23) and my ex’s name is Taylor (21). During our 2 year long relationship she hung out with a couple of good friends that were dudes from time to time. Sometimes she would ride along with them when they were doing Grubhub and smoke weed with them. Other times she would be at a girlfriend’s house and one of them would stop by. On a few occasions I knew that they had stopped by her apartment to smoke and I had even joined them a couple of times.

 Fast forward to a few months after we broke up and I was snooping on her Facebook and her Snapchat story and could obviously tell she was more than friends with one of them, Zack (25). Well I message her and asked what was up and how long that had been going on. At first she tried to play it off like they were just friends. Then as it was pretty obvious that was a lie she eventually said it started after our breakup. I pressed harder saying I thought she was lying and I thought it had started when we were still dating. Finally Taylor admitted that they had hooked up once when we were dating when he came over to smoke. My heart raced and I pressed her and said I didn’t believe it was a one time thing. I asked all kinds of questions like did he use a condom? Was he bigger than me? Did he pull out? How many times did it really happen? She said it didn’t matter and we aren’t together so she didn’t want to talk about it. I let it go for a couple of nights and then I got drinking and started texting her asking her the same questions. Finally she said fuck it, if I’ll leave her alone she would tell me. She said no they didn’t use a condom because she was on the pill, yes he was quite a lot bigger, no he didn’t pull out and she finally admitted they had been fucking most of the time we were dating. I pressed her on why and why didn’t she breakup with me. She said he was about 8” long and she just did it for the better sex as I was only about 5” hard. She said she didn’t want to be with him but just enjoyed the sex. She did say she thought it was kind of hot doing it behind my back and almost getting caught a couple of times. Apparently one of the times I had come over and smoked with them at her apartment they had just got done fucking. She said he literally came in her 2 minutes before I walked in and she could feel his cum running out of her as we all sat there on the same bed. She told me after I left they got horny talking about how I was smoking a joint with her after she had just got done sucking Zack’s dick. Zack thought it was hot he had just fucked the shit out of her and blew his load in her and then they were all chilling together minutes later without me knowing. She said they ended up fucking again after I left… I got pissed and my blood pressure shot up as I could feel my face get red reading her texts but I was rock hard at the same time. I knew I needed to hear the whole truth.