It was around four months ago when the first weird thing happened with my mother-in-law of three years.

She was visiting my wife and me and was getting ready to leave, and as she does every time, she came over to where I was sitting and gave me a hug. Very accidentally, I brushed the side of one of her boobs with my fingertips. Without thinking, I rubbed my thumb against her bra for about a half a second before realizing what I was doing and quickly stopped, blushing with embarrassment.

She didn't make any overt sounds, but her eyes went really wide and she looked directly into my eyes and then looked down at her boobs where I had been accidentally touching her, and then she gave me a cute little smirk.

She typically kisses me on each cheek since she is French, and this time she did the second kiss much closer to my lips than she usually did, which caused me to smile at her.

Since then, every time she gives me kisses, she's been moving ever-so-slightly closer to my lips, and I've continued to surreptitiously give her side boob a little rub with my thumb.

Of course, she hadn't actually kissed me directly on my lips yet, and there's only so much that could happen with my wife right there with us.

I know you may be wondering what my mother-in-law looks like, so I will try to describe her. She is in her mid-fifties, is quite a bit shorter at around 5'1", has D-cup boobs, and dark long hair that is starting to have some gray in it. I think she's beautiful. She is just barely plump but not fat, and my eyes are always drawn to her voluptuous butt.

Somehow, she managed to talk my wife into having me go with her to Costco to do her shopping, and I would get stuff for us too. When my wife was on the phone with her talking about it, I had to act as nonchalant as possible when I agreed to go with her.

It was around 10am when she arrived at our building to pick me up in her car, and as soon as I was inside, the very first thing she said was, "So, you want to go in my apartment for quickie?"

Her accent made what she said even cuter, and I could feel myself blushing really hard. I managed to answer. "I'd like that."

We drove in silence for the 10 or so minutes it took to get to her building. She wasn't shy and reached over and massaged my painfully-erect cock through my pants. She was wearing pants as well, so I knew I wouldn't be able to do much for her even if I rubbed her, but I tried anyway and she made appreciative noises.

When we got to her building, we parked in her underground parking garage and walked really quickly to the elevator, holding hands and smiling at each other.

When we got inside her apartment and closed the door, we didn't waste any time. She started taking her clothes off and I followed suit.

When she saw my cock, she said, "Ohh, is very nice one!"

We got on the bed and she said, "Uh, not much time but we kiss yes?"

And kiss we did. Finally, after all these months of teasing, I was finally alone with her and had my lips on hers, and soon I pushed my tongue into her mouth, where I was met with her very hot tongue in return.

She broke the kiss for a second and said, "Maybe we kiss while we fuck? I'm ready!"

I didn't need any more encouragement and used my hand to line up the head of my cock with her very wet pussy, finding quite a bit of resistance.

She moaned loudly and said, "Mmm!"

I had to ease it into her because she was quite tight, but after about 30 seconds, I was fully inside her. Her eyes were closed tightly and she was softly moaning.

My body took over at that point and I began thrusting into her with quite a bit of force. She pulled her legs up to her chest as far as she could and I penetrated her even more deeply.

We kissed incredibly passionately and sloppily as I pounded into her, sucking on her tongue and moaning into her mouth.

I knew she wasn't wanting a long, drawn-out session, so when I started to feel like I was going to come, I didn't try to stop myself. Before I knew it, my body was tensing up and I felt that familiar heat and pressure surge through my groin as my orgasm shook my body.

I continued to thrust as what felt like a huge load of cum jetted out of me and directly onto her cervix, filling up her vagina.

Saliva was going everywhere as we both moaned into each other's mouths and I continued pumping into her.

Finally, my thrusting slowed and I pulled her to me, licking, kissing, and softly biting her neck.

After a couple minutes with her moaning and kissing me, she finally said, "We should go, lover boy." She laughed and I smiled.

I looked into her eyes and asked, "Okay, but was it okay?"

She smiled and said, "Oh it is very okay! I love it!"

I pulled my cock from her pussy and saw a copious amount of cum start to come out of her.

She sat up and looked down at herself and giggled. "So much! Let's see the taste." She gathered a little on her finger and licked it off.

She smiled and said, "Mmm, I miss that a long time." To explain, she divorced a very long time ago and has never gotten back into another relationship since she was busy raising her daughter.

We got up and went to the bathroom and used warm washcloths to thoroughly clean ourselves, and then headed on to Costco where we did our shopping.

All of this happened earlier today and I have no idea what might happen next. I've been repeating the scene over and over in my mind and have been getting random erections all day. I'm planning on fucking the shit out of my wife later tonight.

I'm really wondering if my mother-in-law's pussy tastes anything like my wife's, and I hope I get to find out. I keep kicking myself for not licking her pussy at all when we were together, but since we were in such a rush, it just didn't happen.

I wonder how my mother-in-law will find a way for us to be together again soon.