I pulled my cock from her mouth before I choked her with it.“I had better get back to work. I think they are looking for me.” It was Julie. With h...r orgasm over her attention to business returned.“Wash up in the private office washroom before you go out, Julie.”“OK, I’ll talk to you tonight. Remember to use a condom.”“No worries. I love you.”“I love you too. Thanks for doing that for me. I’ve been frustrated with you away over there.”“We’ll be home in a couple of days. Marg and I will fly in. Then she exhaled and her mouth opened to a wide smile. I said,”Did that blow your mind?” Without opening her eyes, she again smiled and said,”Yes.”I moved on top of Sam, who now spread her legs for me. She grasped my manhood in her hands, which seem small in comparison. I moved forward, and she guided me to the entrance of her tunnel of carnal delight. She moved the head of my cock, to lubricate it, around her vagina. Then she guided me in until I breached her opening. Now as I pushed into her,. I had to lean way forward to reach her cunt but it was well worth the effort. Her fluids were sweet as honey. I started on her clit to make her hot and needy; moved down to stick my tongue deep into her tight pussy; then surprised her by licking her virgin rosebud. All this time she applied her tongue and mouth to my rock hard dick. Morgan was massaging my balls as she knelt alongside her sister. I reached down so I could finger her pussy and ass. I wanted her as soon as I had finished. You've got a month to kill before I return to the Sol system. You should have learned enough by then to convince those unbelievers back on earth." "Can I come?" I begged, keen to keep company with the only other human and already feeling the loneliness of isolation and culture shock. "You won't approve of what we're doing. They had enough trouble getting the mammalian DNA ideas past their own ethical research committee. What was it you said? 'Needs must'." I searched desperately for a reason.