Authors Note: Long-time reader who decided to try his hand at this. It was much harder than anticipated. Looking for honest feedback on how to improve. All characters are fictional and at least 18.
My girlfriend and I have been together for a little over five years now. We have your standard meet-up story. We met through friends right after college, fell head over heels, and generally moved way too fast. Through all the ups and downs we've settled in nicely to a fairly happy life. Our sex life is overall pretty good. She grew up religious and at times can shrink towards being conservative in the bedroom, but for the most part is willing to play along. Melinda, or Mel as I usually call her, is about 5'4'' with dark hair that changes color each month. She has dark brown eyes that you can find in the dictionary under temptation. She's gained a little weight since college, but at 155 she wears it well. She has DD tits and gets her fair share of looks during a night out.
About three years into our relationship, we moved into a new place. Shortly thereafter, she recommended the development to one of her longtime friends and coworkers, who was coming off a bad breakup. I could not have been more excited. I tolerate most of her friends and find a couple fairly attractive, but Arianna is a bombshell. She was on the swim team in college and has the body to prove it that she never misses a chance to show off. She's a couple of inches taller than Mel and thick in all the right places. She also has a DD chest that seems to stand a little higher than Mel's. The one area she wins in no contest is her ass. It is the most impressive booty I've ever seen in real life. It's round and well more than a couple of handfuls.
A few weeks after Arianna got settled in Mel came into the living room and asked me if I would like to join her and Ari at the community pool. I had been waiting since the day she moved in for this request and had to work at waiting an appropriate amount of time before answering, "Yes!" I didn't think this through. I knew from the moment she slid her denim shorts down over her toned and tanned thighs that I was in trouble. She was wearing a string bikini bottom that wasn't supposed to be but wore as a thong. It had no chance against that ass. Despite my best efforts, I could not stop staring. I thought the two of them might have caught a glance or two but neither said anything. I dismissed myself after about an hour and went home to jerk off in a cool shower. I did my best to put Ari, and her perfectly sculpted body, out of my mind.
Everything was fine for several weeks after that. Everything was as normal as always and we'd hang out and go out to eat together just as we always had. About six months after moving in, as we neared the holiday season, Ari was traveling back home up north. She needed someone to watch her dogs and didn't want to pay for a boarding place. I am a dog person and LOVE her two dogs anyway so I obviously said I would. I didn't think anything of it at the time. The first few days went without a hitch. It wasn't until Mel left town for the weekend and I was home alone that the trouble began. It started innocently enough, taking an extra peek here and there as I was letting the dogs out. However, the intrusive thoughts slowly began to win out until I couldn't help myself. I worked up the courage and I turned into a professional detective. I was snooping through drawers and looking under beds trying to find anything that would fuel my fantasy thoughts about Ari. I was terribly disappointed to find absolutely nothing. I was surprised given the way she talks about sex casually, but zero adult items to be found. The only thing of interest was her panty drawer which was filled with all kinds of risquΓ© options. I took a mental picture and turned to leave when the devil on my shoulder spoke up. I pocketed one of my favorite pairs and took it home. When I got back, I couldn't stop thinking about how good they would look on her. Horny to the point of madness, I did something I'd never done before. I stripped down and tried them on. I couldn't believe how good they looked even on me. It was a tiny black G-string with a colorful triangle of fabric covering my quickly growing cock. I grabbed my phone and snapped off a couple of pictures to remember then returned them to her drawer.
Over the next several days, it only got worse. I returned each day and kept trying on different pairs. There were thongs, bikini style, boy shorts, cheeky, and lingerie. I tried them all. Only now I wasn't wasting time between houses. I stripped down in her room and took all kinds of pictures and videos in her bedroom mirror. I'd never felt a thrill like this. In my relationship I am the dominant partner who has always been interested in role reversal, but one who didn't push when Mel wasn't comfortable. I'd never been this horny in my life and I was thoroughly enjoying it.
Ari and Mel returned home at the end of the week and life went back to normal, I still visited my new fantasies whenever I had time alone but didn't dare explore them with both girls back home. Three weeks later it was a normal Friday night. Mel was out of town for a friend's bachelorette party, and I had just set down on the couch with a frozen pizza to watch the game when I got a text from Ari. I was surprised as we very rarely communicate outside of seeing each other in person. My surprise slowly turned to horror as I opened it to find a picture of me staring back at the camera wearing nothing but skimpy, black lace panties. I'm in my mid-twenties and in fairly decent shape with just enough chest hair to distinguish between a man and a boy. However, I'll admit I'm somewhat lacking in the package department. It's about 5 inches with less girth than I would like, and it looked pathetic tucked inside the lacey panties. This text was quickly followed by another that read:
"Since I'm sure you're staring blankly at your phone like a dumbass, let me explain what's going to happen here. You'll be at my house at 8 o'clock tomorrow morning with Dunkin ready to go, a minute late and I send this to Mel. Don't be late."
She was right and I continued to stare at my phone for another five minutes. I'd been so damn horny I'd never even considered to stop and look for the doggy cam sitting on her dresser. I sent several messages begging alternately between forgiveness and not telling Mel. She sent her Dunkin order, but otherwise ignored all my attempts and pleas. I eventually gave up and went to bed where I stared at the ceiling until it was time to get up.