My thumb was shaking as I pressed the send button on my mobile, I could not believe what I had just done. The message read 'Home alone in a silk undie... with only a vibrator to keep me happy till my husband comes home later tonight'. I instantly regretted it but my throbbing pussy was urging me to continue. A response to the message was almost immediate, 'what's your address, I am on my way, Ben xxx'. The feeling in my stomach was indescribable and I didn't know what to do. I typed my address. The sight of her wonderfully round moons incased in her tight jeans mesmerized me. Saliva rapidly flooded my mouth as I imagined how her ass would taste. I had to swallow hard before the drool escaped my mouth. I wasn't aware of it at the moment, but my sister had turned her head around and watched my eyes take in her sexy butt-cheeks. I must've looked pathetic.When I finally looked up and locked eyes with Tracy, my face became tomato red. I was busted big-time and she knew it, too. Tracy. Finally when i reached her, i moved my hands around her belly and started caressing her. she gulped on for like a second or two but soon she joined me. i moved my hands inside her apron and under her dress (kurta in out language) and started caressing her boobs from the outside of her bra. her boobs were very huge and so the bra was very tight for me to reach inside and touch her nipple. and i had a feeling that it would be the greatest sex i would ever haveso, now holding her boobs with both. "Come over sissy boy and just fucken do what is told".i comply to her dominating voice.As the room gets bright iam shocked to see my girlfriend Narissa with Pearl giggling at each other.How did this happen? i wondered to my self.. this was not part of the plan.. Before i could think again about it i heard them calling me names and they noticed me flushing.Narissa told that she had met Pearl the day she caught me watching strapon porn.The idea of seeing a woman fucking her man was a big turn on.