Aunt June was lying on her chaise, still in the afterglow of her most recent fucking. And as Mom was watching her and smiling, her hands rose to her nipples and toyed absentmindedly. I could feel my cock finally getting flaccid. I turned and dove into the pool. The water felt wonderful and refreshing. I decided to put in a few hard laps before slowing down to a relaxing pace. After about 15 to 20 minutes I stopped to float. I could hear Mom and June talking softly.
"Honestly Faye, it is incredible! I have never had a cock that huge before and he is the best fuck I have ever had. And his cum! Oh my god! Well what did you think?"
"Really June?" Mom replied, "You have to ask? It was amazing! Yes, he tasted good, but that is mostly due to his hygiene, health and diet. But I couldn't believe how much jiz he makes! I mean, fuck that is a lot of cum!"
"And every one of his loads has been that big and that good!" Aunt June added.
Mom's voice dropped lower but my hearing was excellent... "Did I really deep throat him last night?"
"Damn straight you did!" June responded. "I never have been able to do that, I envy you." They were quiet for a moment and then Aunt June tried to whisper, "So... are you going to fuck him?"
"I need a cock, June." Mom answered faintly. "I need a good fucking and a whole shitload of orgasms. And I know he's clean, unlike some dick I might pick up in a bar... But he is my son. I agreed with his arguments and I love him so damn much, but I'm not sure I can do it. I want to. I watched the two of you and I so badly wanted to join you."
Aunt June spoke in a normal voice now, "Tommy be careful! I don't want that cock getting sunburned!"
I rolled and dove, swimming along the bottom of the pool until I reached the end and climbed out. "Yeah well I get more sun than you two do, so maybe we ought to all go in." I noticed that as they walked in, the two robes were left on the ground. We paused in the laundry room as I toweled off and I could tell that they were trying not to seem obvious about looking at me. I stopped in the kitchen for more drinks and then walked into the family room and they followed me. I plopped down on the couch. Mom and Aunt June looked at each other for a moment and then started to sit in the recliners.
"Whoa, whoa, whoa." I said. "Look your status as lovers is a fact and you do not need to pretend to be proper. Just sit together and cuddle." I waved at the love-seat. "I know you want to."
They giggled a little and got cozy in no time at all. I saw that Aunt June relaxed and took Mom into her embrace. Mom actually looked happy with her head resting on Aunt June's large breasts. There was nothing sexual about it, no caresses or kisses. Just two sisters relaxing together.
"You know," I said, "Maybe we should lay some ground rules for this new, uh... well, relationship dynamic." They giggled some more. "Such as clothing being optional when we are alone. Are you guys okay with that?"
"Sure." they both said.
"Okay, next we need to probably agree that checking each other out is allowed."
More giggles followed by approval.
"Hmmn, what about bedroom rights?" I asked. "How do we handle that one?"
Mom fielded this one, "Simple, we each control our own bedroom. We extend invitations to the interested party who may accept or decline."
"That works for me," I said.
Aunt June asked, "What about sex in progress? Can the new arrival ask to join?"
"Uh, no,I don't thinks so..." I said. "That could get awkward. It would be better if the participants invited the new arrival. Without an invitation the new arrival should assume the participants want to be alone."
"Then they should close the damn door! "Mom said.
"That works in the bedroom," Aunt June said, "but not for everywhere."
"Ugh!" Mom feigned distaste. "Just don't do it in the kitchen!"
Aunt June giggled, "No promises..."
I lay there and watched them. They seemed so happy together, maybe more so now because they could relax and be at ease. Aunt June played with Mom's long light brown hair. She actually dozed off. Well, we all did.
I awoke and it was late afternoon. I was alone in the family room, but listening I could hear voices in the kitchen. I strolled in and saw that they were working on dinner. I pitched in and in no time at all we had plates of grilled chicken, roasted red potatoes, and steamed broccoli. We sat and talked as we ate. Then we poured drinks and went to enjoy the sunset, poolside again. No one had bothered to dress. Everyone seemed to like the freedom. I liked the view. As we talked I decide to try to learn more about my Mom's mysteries and secrets.
"Hey how about we have a Q&A session?" I asked.
"What do you mean?" Mom seemed guarded.
"Well there are questions that I have but couldn't ask before, and I'm sure you have questions for me." Mom frowned. I quickly added, "You can decline to answer, it has to be voluntary."
They agreed and I asked first, a rather obvious question, "Do I need to use condoms with you?"
Mom answered me, "No hon, we've both had our tubes tied. We're safe in that regard."
Aunt June asked me the next question, "Tommy, do you mind telling me just how far you got with your girlfriends?"