My Biggest Regret

So I want to start off my saying that I have learned from this, and I never have done anything like it and I was a dumb kid but I can’t really apologize for what I did so I’ll confess it here. Growing up parents were a great couple, hell they still are. They had a good sex life and they were just good together. How do I know this? Well when they were not always quiet. I was 16 one night when they came home after going out to a get together and I could tell they were both drunk which whatever. They weren’t bad or mean drunks whenever they did drink which wasn’t too often or anything. So they don’t notice my door is open and they leave their door open and I heard it all. That’s the night that I found out my mom likes it up her ass which is something I really didn’t think I needed to hear but it oddly made me curious. So they finish up their whole thing with lots of dirty talk you don’t want to hear from your parents and my dad left the room to go get something. I don’t hear much after and head out to the living room and my dad is in the recliner passed out snoring so I let my curiosity get the better of me and went to check in on my mom. So I was shocked, there she was also asleep passed out, naked with her ass almost off the edge of the bed. I went back to my room but like couldn’t stop thinking so, this being 20 years ago I didn’t have a a smart phone with a flashlight or anything and I looked for a flashlight but I end up grabbing my old game boy advanced with my worm light and went back to my parents room. My dad was still asleep and I walked into the room and spoke to my mom and she didn’t answer just light snoring or sleep breathing whatever you call it. I used the light to look at her ass and I lightly moved her cheek and she didn’t move or anything and I seen her asshole as clear as day. It looked wet and I mean I’m a guy at 16 at this point, I know what cum is so I could tell there was some there. So this is the big part of my confession. I took out my dick and rubbed it on her asshole, and I made that plunger and push and it slipped in, I am guessing from whatever lube my dad had used that the time combined with his cum and the fact it was probably loosened up. My mom didn’t stir and I slowly moved it. Now I was a virgin at this point, and this felt incredible and I knew I shouldn’t but it felt to good to stop but I also didn’t go crazy and went slow and before I know it I was cumming in her ass. I pulled out and post nut clarity hit. She didn’t wake but I got the hell out there. Looking back I was an idiot, for one doing that to my mom, especially when she was passed out, I have never forgiven myself, plus she could of easily woke up or my dad could of walked in. Also when I say I am confessing to all and I can’t apologize is because I can’t, what do I say? Go to my mom and say that 20 years ago you were passed out and I lightly fucked and busted a nut in your ass mom. Like that is something that would ruin a relationship and like I said I never ever did anything like that again. So is my confession about being a dumb as fuck kid.