Author's Note: CAUTION. This story contains some male bi-sexuality. If that disturbs you, then you should probably stop reading and select another story.
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Beth and I rested for a few minutes before we turned off the lights and cuddled up in bed together. I couldn't believe I'd just walked into my son's room naked, with a hard-on, and gave him the juice soaked panties I'd pulled out of my wife's pussy not more than a couple of minutes after we finished making love.
Charles' eagerness to take his mother's messy panties from me and his indifference that they were coated with my cum puzzled me, but, apparently my wife was absolutely confident he'd want them. The way he eagerly reached out for them surely spoke volumes to me, and as I laid there next to Beth cuddling against her breasts, I knew my son was in his room, right now, sniffing and licking those panties as he stroked his cock.
"I'm going into work early tomorrow." Beth said, casually. "I want to get off a little early so I can do some shopping, but, I should be home about the same time as usual."
"Shopping?" I asked. "You mean for groceries?"
"No, silly." Beth said, giggling into my chest. "I want to pick up two or three more sets of that mesh lingerie – like the white ones you want me to wear tomorrow."
"I don't think I'd need more than two or three days worth before we end up switching over to full nudity," she explained, "but, just in case it takes us that long, I want to make sure I have something to wear in front of my two men."
As soon as she explained it to me, it made total sense and I was ecstatically happy she was thinking about what was going to happen the next few days. Along with that, if she was able to find more of the almost see-through bra and panty sets, that's obviously what I wanted her to wear in front of Charles.
"Hey," she said, softly, "can I ask you a serious question?"
"Sure." I answered, reaching up to pinch one of her nipples.
"No," she continued, "I mean it. Can't you be serious for a minute?"
"Okay, okay." I replied. "Fire away."
"Well," Beth began, "I think we're both in agreement we'd like to offer our son a chance to be sexual with us, but, I need to know what the limits are. I mean, have you really thought about this?"
"What do you mean?" I asked.
"For instance," Beth answered, "when the time comes, is anal sex off limits with him? And, should I let him cum in my mouth? My vagina? You know, stuff like that."
In the time she asked her question, my cock engorged itself and I was hard again despite the fact that we'd already made love less than thirty minutes earlier.
"Truthfully," I replied, "the only limits I can think of are what you will allow, and what you won't allow. As far as I'm concerned, you can take it as far as you want as long as you're not trying to hide it from me."
"I'd never do that, Sweetheart." She said. "I want us to do this together, like we agreed. But, I need to know if I have your blessing to do everything with him that you and I do."
"I don't see why not." I answered. "I'm not going to get jealous, Beth. You can do anything you want with him."
She reached down to stroke my cock, and then said, "That's not exactly what I meant....."
I asked Beth to be honest with me, and she finally got to the point. She asked me how I was going to feel about kissing her, or touching her after she'd had sex with Charles. She wanted to know if I expected her to wash herself or brush her teeth after they'd been together.
"Hell no." I said, chuckling. "I've been truthful with you since the beginning. If it were up to me, I'd actually prefer it the other way. What I mean is, I've spent years fantasizing about you being with another man and thinking about another man's sperm in your pussy or in your mouth. I want you to feel free to do anything and everything with him."
"As long as you can watch and participate?" Beth asked, in reply.
"Yes." I answered. "But, let's make sure we remember it's not just me that wants this. It's you, too, as well as Charles. We all get something we want here, that's what makes it so good for us. He's the perfect lover for you, and the perfect addition for us."
I was happy the light was off, because I felt my cheeks heat up with embarrassment as I continued, telling her I hoped Charles would be open to some touching back and forth between the two of us.
"Wouldn't that be so perfect?" Beth sighed. "I mean, if the three of us were able to touch and suck and fuck each other openly. Do you think he'd go along with that?"
"Well," I said, "he didn't seem at all concerned when I handed him your panties with my cum all over them a few minutes ago."
"Let's just play it by ear and see how it goes." I added. "We'll start out with the underwear, like we agreed, and if he shows interest we'll do more. If you get a chance to ask him about it..... you know..... about mutual touching and the three of us playing together, then by all means, bring it up and see what he says."
"Tell me the truth here." Beth asked. "If you got the chance, would you suck him? I mean all the way? Let him cum in your mouth?"
"Are you kidding?" I replied. "As long as he was comfortable with it, of course I would."
"Gawd, I'd love to see that." Beth moaned as she gripped my cock and jerked it up and down for a few seconds.
"You know, I could help." Beth added. "I could teach you guys how to suck each other, and how to fuck each other. I'm sure the real thing is going to feel much better inside you.... better than our strap-on does. I'd love to help you guys with that."
Well, that sure made me stop and consider things. I remember how emotionally difficult it was for me to actually enjoy the strap-on. And that was just a plastic cock. Sure, we'd fantasized together about having a male lover who would play with me, too, but that was just fantasy. Beth was talking about a real, live cock fucking my ass – my son's cock.
"I'll try to find the right time to feel him out on that." She finally said, giggling at her choice of words. "But, if I had to guess, I'd say he definitely inherited his father's curiosity."
We both fell asleep and I woke up the next morning as Beth was just getting out of the shower to get into the office early. I watched her as she puttered in the bedroom, enjoying the sight of her naked body – her breasts and the hairless lips between her legs.
"I was just thinking," she paused and looked over at me saying, "what if you and Charles went shopping with me later?"