She used to have a tight asshole.

My wife started with wanting a fingertip in her asshole. No, let me correct myself; she didn't know she wanted that until one night she was more lubricated down there than usual, and I slipped it in out of curiosity. I'd barely gotten it in to the first joint. But each time we had sex, that escalated. Within a month, I was wiggling my full middle finger in there. She found that she liked me to finger her butt hole while she played with her clit.

And then... her orgasms were explosive and loud.

I asked her about it afterward, "What's the turn-on?"

"I feel like I'm being so bad to have something in my anus. It's difficult to explain, like... let me see. OK, this might sound stupid, but... so if I were to tell my mom over lunch, 'Listen, Mom, I have sex,' she would probably chuckle and say, 'Yeah, you're an adult woman, and you're married; I could have figured that.' But if I announced, 'Mom, I get fingered in my butt, and it feels amazing...' she might choke on her food right there."

"I see. It's naughty. Your vagina is assumed to get penetrated, while that other orifice is a no-no secret zone you're violating like it's nobody's business."

"Yeah. That's so hot the way you put it. Exactly. Oh my gosh."

"But babe, you haven't been fucked-fucked in your butt."

"What do you mean?"

"A finger isn't a dick."

She blushed. "I'm afraid of that. You're not small down there."

I took the compliment. But I still wanted to fuck her in the ass with my dick! So with her green light, I bought her a toy intermediate in size between a finger and a dick. It slid into her asshole as if it belonged in there, like her anus was trying to swallow it, to suck it in. She absolutely squealed as it swiveled in there, massaging and pressing deeper and deeper until I didn't have any toy left to feed into her hungry, clenching anus. It was the first time in our 6 years in that apartment that the neighbor pounded on the wall for us to turn the fun down.

No way, neighbor. Best we could do was move our fun bun time to daylight hours so the noise ordinance wouldn't apply.

One afternoon, with the toy well into her ass, she said what I'd been waiting for. "Now."

"Yeah? Now?" I couldn't believe it; I smiled ear to ear.

She got impatient and took hold of my dick, guiding me to her pussy. "Ram it in, ram it!"

And I did. I was rude in how I went balls deep on the first thrust.

She took it. She looked like she was trying to do the sign of the cross and heads-shoulders-knees-and-toes at the same time.

I felt the dildo sliding and whirling around against my cock, even through her strong anal-vaginal wall.

She cried with pleasure. "It's so much! Wait, wait!"

I took it easy on the backstroke. "Alright. I thought you wanted it like that..."

"I do, I do, I do. It's so goood!" She rolled her face in the pillow; she clawed at the blanket. "Now, pound me. Pound me while I have a... have a... !"

I started pounding with some abandon. "Have a what, sweetie?"

"I have a dick in my ass!" she announced. "Mmm!"

It wasn't a dick, obviously, but she must've been fantasizing it like that. Her husband fucking her pussy while a second dick invaded her asshole.

"You're so wrong to get fucked in the anus, sweetie. Why would you let a man put his dick in your little butt hole?" I teased her.

She loved it. "Mnrph! I have to let him fuck my asshole. I have to let him fuck me in my asshole!"

"Why, sweetie? Why do you have to let this man fuck your asshole?" I slammed into her pussy. The sensation of the dildo flexing and expanding her chute was a treat for her to be sure, but it had the side bonus of making things tighter for me too. There just wasn't as much room for me in her baby-maker when next door was fully occupied, too.

She answered, her eyes rolling in ecstasy; she was climaxing, gasping. "I... I have to let him fuck my ass because I want to keep my pussy for you. Only my husband can have my pussy."

I was actually moved, however funny I found it. "Aha, you were thinking of me?"

She murmured into her pillow, her hair a wild mess. "Mm-hmm."

I bust my nut in her, yanked the dildo out of her butt hole. For a second I could see into her, but only a second. The toy hollowed her out better than a finger, but it was no cavern blaster. Still, removing it instantly eased up the pressure in her pussy. I wasn't so constricted in there. And then I pulled myself out.

Over the next couple of weeks, my wife and I texted while either of us was at work. I was both turned on and concerned by the notion she blurted out during sex, that she could give another man her ass and that'd be OK because... her pussy remained monogamous. Yeah, it's a funny self-imposition and boundary definition; I'm chuckling now just writing it. But I texted her flat out, "Hey, don't think you can let some dude fuck your ass and it won't count. It would count."

She texted back, "Of course. It was dirty bedroom talk. I thought you liked that."

I texted back, "OK. I do. Just clarifying. I love you."

She replied with the little heart thing.

I want in her ass. Not my finger or a toy. My dick. I think about texting her that too. But I refrain. She'll be ready when she's ready. Damn, how I look forward to it. It's going to be great!