I live in a somewhat cheap apartment, and for years I had an old (but thankfully not near-deaf) man as my neighbor. I hardly ever heard him, even though the walls are thin. Then he moved out, and everything changed for me.
The first day I saw a group of South Americans enter the place and they worked their assess off, stripping the place clean and redecorated in like two days. The only woman of the group, Maria, introduced herself as my new neighbor.
She was really nice and I invited her over for dinner on the first day she lived there, because I could tell she was totally exhausted from the work, and to be a nice neighbor of course. We started hanging out in the weeks that followed, not like best friends or anything but she didn't know anyone in the area yet, so I took her to the local gym and spa, told her about the nicer restaurants and stores nearby and all that.
She was always grateful and just a nice person to have around, even if we were a little different in some ways. For one, she always dresses and acts very provocative. Short skirts, high heels, strapless tops or dresses with deep cleavage. I didn't really feel jealous or threatened around her, but she definitely got more attention when we went somewhere together. I get plenty of looks and attention from guys, but she's just hard to miss for most guys out there.
A few weeks later, on one random night, I came home late (I usually go to bed early) from a birthday and felt the need to "rub one out" and ended up masturbating in bed. After years of living next to the old man, I knew how much you hear through the walls, so I had learned to be pretty quiet about it. Most of the time I do it in the living room anyway, because there's no neighbors on that side, and the sound is actually quite muffled between floors for some reason.
So there I was, taking care of myself when I suddenly heard giggling from Maria's apartment. I froze up, thinking I may have dozed off a little and forgot to keep silent, but I realized that wasn't the case. I didn't think about it and continued to pleasure myself, and then I heard more giggling and a moan. My heart skipped a beat in excitement, as a lot of things just came together in my head.
Part of me knew, of course, that a beautiful young woman is bound to have sex in her apartment sooner or later (even if I hadn't, in the time that I lived there). And there was something incredibly sexy about her voice, even if I (wait for it...) "wasn't gay".
I held my breath, suddenly very cautious to make the slightest of sounds, like I was eavesdropping on her despite being in my own apartment.
Her moans continued and she became louder, going from "very noticeable" to downright loud real quick. I didn't really think about it, closed my eyes and masturbated to her moans and my own imagination. It wasn't even about her, really, I just found the sound of another woman having sex very enticing and I came faster than I thought possible. By the time she stopped, I was almost coming again, but I couldn't get myself off when she turned silent and I fell asleep a little disappointed.
I didn't even really think about it the next day until I went to bed again. It still wasn't like I wanted to hear *her* specifically, but just the way it turned me on immensely the day before made me listen closely to any movement in Maria's apartment.
When I realized she wasn't in the bedroom, let alone having sex, I started to drift off into sleep. I snapped out of it twice when I heard her walk into the bedroom, but eventually fell asleep.
The next night she was at it again, around the same time as before, too. It woke me up and got me so turned on within seconds that I found myself rubbing it out to her moans. She sounded incredibly sexy but I still didn't think about her, I kind of just didn't think about anything and just let it happen.
When I saw her again the next day, we didn't speak about it. I don't think she even noticed I was feeling a little off at first. A week or two went by, with me silently enjoying her pleasure every few days. I even started to wake up subconsciously around her usual "fuck time", only to be disappointed and moody when she wasn't getting any (or at another time).
Then one night the big reveal happened. I was playing with a little vibrator (a pretty silent one, at least when others are going at it next door), listening to her again, since that was pretty much the only times I even masturbated anymore.
I was close to reaching my peak when the sounds from Maria stopped, for a moment, but after a little while the moaning started again - just not hers.
When I realized she was with another woman, I made a sudden sound that wasn't at all sexy, but loud enough to be heard by Maria and her lover. It was like a yelp and moan in one, the result of trying to hold back my sighs of pleasure for the past fifteen minutes.
I immediately heard giggling from her room, which would've shut me up if I hadn't been on the edge of orgasm. My mind just went its own way, picturing Maria and a faceless woman making out and playing with each other, and I came violently on my bed. I was surprisingly able to stay mostly silent throughout it, but it was clear they had heard me.
They didn't tone down their volume and just continued doing whatever it is they did, while I was lying there flushed with shame and confusing thoughts. The very idea of Maria with another woman was what hit me so hard, sexually, while I never thought of her (or another woman) like that before. Nevertheless, I couldn't stop thinking about her in exactly that way from there on out. I think I even dreamed of her that night, or the next.
We had already planned to go out for dinner the next day, and at first we both pretended nothing happened. Eventually, though, she started smiling for no reason and she just threw it out.
