Embarrassing but Awesome

I'm a 25 year old male. Two years ago I was riding in my aunts car back from her house to my mom's. I was in the front seat and we had been on the rural roads for a while with no place to use the bathroom. Well I had to go and eventually I shat myself with a loud fart. It was messed up because I literally only had one pair of clothes. I told her the situation and she opted to pull over so we could figure something out. There was no spare clothes in the car so I actually wiped with my shorts and left them in the bushes. We were luckily on a rural road with zero traffic. Now all I have is a shirt on. Since I was attracted to my aunt when I saw her look at my penis it got hard. Then it got very hard. I tried my best to cover it with my shirt but it was so obvious. I actually used to fantasize being exposed around her so this was a dream come true in my book. Eventually she asked if I was okay, hinting at my penis. I said I was fine just a little nervous about being naked around her. She assured me as my mothers sister that it was fine and she wouldnt tell my mom as she knew I was embarrassed. I felt more comfortable and eventually just took my shirt off. There I sat in the front seat with my sexy aunt next to me, completely naked. I spread my legs apart knowing this was a once in a life time experience. I began masturbating and at first she didn't say anything but a couple minutes later asked me if she needed to pull over. I asked what for and she said so I could finish. I said yes and she found a spot on the side of a wooded area to park. She said she didn't want any more mess in her car and asked if I could finish outside. I stepped out and as I was standing there jacking off she stepped out and walked over towards me. She asked if I needed help and I said yes. She then grabbed my penis and made me cum on the ground in about 4 strokes. It was one of the best orgasms I've ever had to date. After that I settled down and we eventually made it back. When we got to my moms house my aunt went inside and came back out with my mom and a pair of clothes. My mom had no idea what happened except for the fact I pooped myself in my aunts car. My aunt acted like nothing ever happened between us. Ever since I've fantasized being with her so maybe one say I can get that chance.