Riding girlfriend's sisters

2nd, my girlfriend was an identical twin hard to believe I know, we had been dating a couple months. I showed up to her place one night unexpectedly just to drop some stuff off. We both had separate plans that night, so had no intention of seeing each other. I come in the door, and she immediately pulls me in and says she has a present for me, and to go wait in her bed (we all know what that means). I’m All for a quickie, so I get naked and lay on the bed. She comes in naked, we make out a bit, and then she points out her completely shaved bare pussy, we proceeded to have sex like normal. (My gf has never shaved her pussy before, and I had mentioned it quite a few times that she should so wasn't surprised that it was shaven). Anyways, we finish, and go our separate ways to our individual plans for the night. The next night, we had plans to Netflix and chill, so we’re watching movies, getting frisky, one thing leads to another and we’re both naked, about to have sex, when I notice a full bush again. That’s when I put 2 and 2 together, that it was her sister the night before. We lasted another year or so, before careers took us in opposite parts of the country.