I start by telling you that one of our mutual friends has repeatedly hit on me since the first time we met. I have always been interested, but turned him down because I am faithful and invested in our relationship. A few of my friends have noticed this and told me that he was the best (and biggest) they've ever had. He did it again today, and I am going to fuck him since I know that you will like it (he will think I am cheating). I go and have my fun with him. I come back and tell you all about it. The sex was even better than I expected. Using a dildo, I walk you through how much fun I had. I ended up staying the night and he ran out of condoms, so I let him fuck me without one and cum inside me. ;)