‘Oh no,’ I thought to myself, ‘This is going way too far!’ The guys were really getting turned on, and began stripping off their swimsuits and...rubbing their hard cocks. All three of their cocks were much larger and thicker than mine. I could feel my own little cock swelling and aching between my legs but my hands were tied and there was nothing I could do to relieve my engorged prick. I was feeling humiliated, angry but incredibly turned on too. So far, it had just been a game between us. Now. And you need to understand that he can never find out about us, ever." "Brenda, I understand that. I don't like it, but I can accept it. When he is home, he gets you to himself, and I don't get to be with you." "But honey, even when your dad is away on his job, we have to act like a stepmother and her stepson, not lovers. No one can ever suspect, even for a second that there is anything physical going on between us. And just because we are sharing a bed, does not change the other aspects of our. "Shit," I said out loud. When I opened the door, there stood my older married sister Joan."Hi sis," I slurred, then I noticed her suitcase, "staying are we?" If that's all right?" she said and walked past me into my flat. Leaving me to carry her suitcase in. "I've left him the bastard," she said, "this time he's gone too far." Oh," I said, "ok you take the bed and I'll sleep on the sofa." No, no, the bed big enough for both of us," she said, surveying my double bed from the doorway."Oh," I said. I joined her by reaching down and shoving my naughty fingers deep inside of her vagina, until I could feel her get moist. I reached down and sucked her dark nipples until they got hard, then I traced my tongue down her stomach and kissed her belly button; she moaned in appreciation.After a several minutes of heavy petting, I decided to mount her.I slipped a condom on and eased my dick into her dripping cunt.I grunted as I glided into her wet sweet vagina. She sighed in appreciation as I eased.