"Poor guy, he couldn't hide the fact he was getting hard as he slipped out of his trunks and plopped down into the water."Why are you sitting over the...re?" I asked as Jen and I moved apart to make room for him.Robert looked terrified, but he complied by sliding in between us.Jen's hand was the first to find his cock and start stroking it. I took the opportunity to caress his balls. He was definitely getting aroused.Then Jen surprised me by moving out in the center of the tub and ducking under. Even though I knew she never saw me in that way, it made me sad that she was having sex with someone else.I started asking her how he was at sex. Suddenly, mistress Debbie texted me: “Slave!! How about you serve both me and my boyfriend? That way I get to keep you as my dog and you can serve your master in whatever way he chooses”. Literally, my jaw dropped. I was confused, I could never say no to my sweet Debbie mistress and she knew it. I had a thousand questions in my mind. I asked her what. She had to find some way to distract herself she chose one of the more detailed reports awaiting her review with the hope of filling her mind with those details instead. She moved to the couch to get as comfortable as she could with that toy locked up inside her. The specifics of the report battled inside her head with the sensations of her body. She rubbed her eyes, trying to concentrate, and instead just drifted off to sleep.Maria drifted awake, her mind taking in the sensations of her body.. “Notice anything different?” she said.Bill looked again. “Hey, wait ... you’re not Jason! You must be his twin Julie! Amazing! He said you’d fantasized about switching -- but you really did it!”Julie was alone in a room with a boy. There was a bed. She gulped and looked him up and down.“And Jason said you’re horny ... So maybe some time...”Julie nodded a little, but kept her gaze fixed on Bill.“Like ... now?” he said.Julie smiled and unfastened the belt on her trousers.Bill undid his too. “I.