I was roommate during my college years with two sisters, Priscilla and Celeste. I had known them since 6th grade, so they were okay living with me. Both were lesbians, which I respected and secretly liked having looked at a lot of lesbian porn behind their backs, but they asked about it one night. I denied it, but was forced to admit to it after they showed me Celeste's laptop's internet history which I forgot to erase.
I was embarrassed, but instead of yelling at or beating me up they asked an odd question; could I give them tips on improving their sex lives. Surprised, I asked why they would ask me that and they said they had no success finding lovers due to their low sex drive. Their dates got turned off when they said they never had sex before. They watched porn to my surprise, but not even that turned them on.
I suggested they have sex with each other as practice. They froze in disbelief asking how I came up with that idea. I said I have seen a lot of lesbian sister porn videos, which aroused me a lot. Looking annoyed, Celeste asked if I was aware the women in those videos were not actually sisters, just actresses. I said viewers imagined them as sisters nonetheless. Priscilla said she never met anyone suggesting sisters having sex with each other. Annoyed, I asked if they wanted my help or not.
They agreed and I spent the next few days preparing a script for their first sex session. In it, the sisters played high school classmates who had not seen each other in years. I sat to watch Celeste nude sunbathing on a float in our backyard pool. Priscilla entered from the driveway and was happy to see Celeste. She took another float, rode it to her, and sucked her vagina. Celeste did not see her as she wore sunglasses, daydreaming with her eyes closed, but after opening her eyes she was shocked to see Priscilla.
They hugged and after a short talk on how they have been since they last saw one another, Priscilla kissed Celeste's thighs and vagina as Celeste took off her strapless top, skirt, and panties. Celeste pulled Priscilla on top of her as she kissed her stomach, chest and neck. Priscilla then about faced forming the 69 position as the girls sucked each other's vaginas, during which Priscilla bent Celeste's knees before fingering her anus. Then Priscilla sat up and fondled Celeste's vagina as she kissed her buttocks and anus.
The pair's movements during the lovemaking caused the float to flip and toss them into the water, which was not part of the skit. I asked them if they were okay or needed helping getting out, but they said they wanted to have sex in the cool water as it felt nice on such a hot day. I allowed it and sat down. They lip-locked as Priscilla kissed Celeste's breasts. Celeste then went under and kissed Priscilla's legs, vagina, buttocks, and stomach. She got onto the float after resurfacing and lay down, as Priscilla sat by her legs to lick her vagina, then moved on top of her. The sisters lip-locked before Priscilla kissed Celeste's neck and shoulders. Celeste then kissed Priscilla's chest. They fingered each other's vaginas. Celeste put Priscilla's head on her chest to comfort her, one hand on her buttocks and bent her knees while Priscilla also held her buttocks and they fingered each other's anuses.
I asked them if they loved having sex with each other and they said they did. I asked why they did not look or act scared or nervous as they said they pretended they were having sex with one of their former dates whom they found attractive. I said that was a nice idea and they could not wait to have sex with one another again. I said I had several other scripts planned for them.