Intimate 1-on-1 encounter with ex-partner reenacting past sexual experiences

I'm not sure what to say about this one. It's a little strange, but it's also kind of hot. So, my buddy and I were talking about our past relationships, and he mentioned how his ex-girlfriend used to love getting fucked in the ass. I guess I just couldn't resist trying it out for myself. We started off with some cowgirl action, but then things got a little more intense. I had my buddy hold her from behind while I fucked her from the front, and then we switched to doggy style. I had to give her a little spanking to get her ready for the ass, but it was totally worth it. She loved it, and I can definitely see why my buddy used to bang her all the time.