my girlfriend and i had a great sex session 2 days ago, we were both aroused watching a cuckold video but for some reason way more than normal. While i was inside her missionary style, fucking her hard, i asked her to tell me what she was thinking about, hoping she would tell me something she knew i fantasised about just to get me to cum with her. What happened wasnt really what i expected .... her face changed a bit and she adopted a more serious expression, still interspersed with some rolling back of her eyes as i hammered up against her. " Somebody made me cum the other day, completely unexpectedly" she grunted out. At that moment i started to cum, and pulled my cock out as it spurted semen all up her body from her tummy up to her neck, a few of the last spurts hitting her cheek and going into her hair. I rolled off her and .... silence. "what are you talking about?" i asked. so, the story that then unfolded, with lots of questions during it from me : she had gone to dinner with an old friend of hers from school a few weeks back who was recovering from a long drawn-out divorce. They had been out until curfew, then returned to her flat for a nightcap. Her friend lived very close so they were initially not too concerned about her driving home the few kms after curfew. Anyway, the opened a bottle of wine and ended up drinking it on top of what they had enjoyed at the restuarant. Her friend decided to sleep over so they staggered into the bedroom, stripped off and jumped under the duvet. Neither of them bathed before doing so although of course both had done so before going out. My girlfriend said she was aware of the musky smell of her friend's pussy next to her as she rolled around and felt slightly turned on by it, but soon fell into a deep sleep. Sometime during the night she awoke to feel her bum being carressed. She froze, not knowing what she should do. She isnt gay, and has never seriously displayed any bi-female tendencies. She pretended to be asleep and rolled onto her tummy hoping her friend would stop. But she didnt, and her long fingers parted her bum cheeks and slid up between her thick labia. she said she could feel just how slimy she was by the smooth manner in which the finger slid up and down her lips, pausing over her clit. She said she felt very uncomfortable and weird knowing it was a woman's hand but she also felt incredibly horny and aroused and this feeling overcame her normal heterosexual inhibitions. She parted her legs more and just lay there, face in the pillow, letting her old friend play with her clit. She only pushed one finger inside her but continued to stroke gently over her clit. Within about 2 minutes she shuddered to a climax and rolled over pretending to still be half asleep -- a feeble attempt at innocence and at being disturbed from a deep slumber. Her friend didnt even look at her, just lay back down and that was it. My girlfriend got up and went into the bathroom to pee and felt her cunt and hair soaked in her juices, so much so that they were all sticky over her upper thighs. I was so fucking turned on by this time, imagining the encounter. My cock was like spring-steel, despite having shot my full load a few minutes earlier. I pushed her down on the bed and roughly fucked her, feeling like i was about to cum again within a couple of minutes but it never did...my climax just eluded me for ages, all the while hammering into her, asking, pleading, for her to set up another date so she could take it to the next level. She kept looking deeply into my eyes, I think wondering if i was really serious, and i suppose (once i had calmed down i reconsidered this) whether intentionally crossing that line was sensible or whether it was a dangerous road to go down. We will see what happens, i have not raised the subject again, but of course i will, soon....