best friends girlfriend

My best friend and his girlfriend were hanging out with me and my girlfriend at our apartment last night. I drove them home while my gf went to bed. I dropped my friend off first then went to his gf’s place. I’ve fantasized about this girl nonstop since they started dating a few months ago. She’s tall with an athlete’s body and short blonde hair, which is totally my thing.
We got to her place and she asked if I wanted to come inside. We were naked and in her bed almost immediately. I literally forgot all about my gf and fucked this girl for two straight hours. I came three times. Once in her mouth and twice in her pussy. Neither of us even paused to think about a condom. When I finally got home, my gf had slept the whole time I was gone, thank god. I was still so turned on that I woke her up and fucked her thinking about my friend’s girl. Now I’m laying in bed next to my gf and my dick is hard because I’m fantasizing about the next time I’m going to get to fuck Steph.