I am standing on the balcony in front of my bathroom, relaxed and smoking a cigarette. After the last sauna infusion, I enjoy the cool air on my sweaty skin. I only have a towel tied around me, but most of the windows in the opposite wing of the house are dark anyway. A quiet, relaxed weekend lies ahead of me. Birgit, my wife, is visiting a friend for a few days, so I can do whatever I like: have breakfast at the market, read, watch TV, maybe take a leisurely bike ride.... I plan the next two days in my mind.

My gaze wanders over the façade on the other side of the small courtyard. On the top floor everything is dark, my neighbours have either already gone to bed or are not at home. On my level and on the two floors below are offices and a doctor's surgery. Of course, there's no one there at 11 pm on a Friday. Same as in the two shops on the ground floor. They only have small windows facing the courtyard and one door each to get to the rubbish bins and the bicycle parking spaces.

Only in the student flat-share on the first floor there is light. Four rooms face the courtyard and only rarely are the curtains drawn. Even now I can see into the room on the far left. A few young people are sitting on the floor in a circle, next to them are glasses and bottles, in the middle is a board game. I see them gesticulating wildly, talking and laughing. The room next to them is almost dark. Only a little light comes in through the open door to the hall. Perhaps the occupant - I think a young man has recently moved in - is sitting with the others in the next room. 

Next comes Lisa's room. She is one of the few people from the first floor whom I know casually. When she moved in, she noticed the nameplate of my design agency, which I run in our flat. She came to introduce herself and to ask for a student job. She's studying something to do with communication and graphics and thought a job with me would be the right thing to do to get a bit of practical experience. But I've been working on my own for years and I don't plan to change that. I like the flexibility, and the projects I'm in charge of I can easily manage without staff. But we had a nice chat, and I did feel a bit sorry that I didn't have the pretty girl sitting next to me every day. Like most of the people in her flat, she comes from Germany. Lisa is a head shorter than me, about 1.60. Her dark blonde, chin-length hair frames her pretty face with its light, grey-green eyes. When she went back to the lift, I noticed her tight buttocks in her jeans. Since then we have met from time to time in the stairwell and sometimes I have accepted parcels for her. Just like good neighbours do.

Lisa's room is brightly lit: Ceiling lamp, desk lamp, the floor lamp next to the bed - everything is switched on. The large window is wide open, as it often is. There are a few pieces of clothing scattered on the floor, and a pile of bedspreads and cushions on the bed in front of the window. This is how it often looks in her room before she cleans up again. There is no sign of Lisa. I wonder if she is playing with the others. I look back into the first room but can't see her there. 

The last room is probably occupied by someone who wants more privacy: the curtains are drawn and only a little light shines out at the sides.

I take a drag from my cigarette and bend down for the bottle of mineral water on the floor. As I take a sip, I hear a loud groan. I look again into all the windows in turn and think the moan must be coming from my side of the house, where I can't see into the windows. Then I notice that the pile of blankets on Lisa's bed is moving. There are not just blankets on the bed. Between the cushions I can now see Lisa's face. I grin: I think the moaning came from her and she's probably playing with herself.

She's maybe 20 or 25 metres away from me and I can see her turning her head back and forth and groaning again. I can even see that she has closed her eyes. But even if they weren't: I don't think she would notice me now, she seems too distracted by her lust and a near orgasm. Then she pulls the covers aside and I realise that I was wrong a second time. It is not her hand that is between her legs making her moan, but someone else's head. Lisa reaches into her curly hair with both hands and holds the person's head. I can't make out much of the other person yet, the narrow back and hairstyle could just as easily belong to a woman as to a young man. I have no idea what Lisa's sexual preferences are.

But I do know one thing now: she loves to be licked. Whatever the person between her legs does with tongue, lips and maybe fingers, she likes extremely well. I notice it both in her increasingly loud moans and in the way she raises her pelvis urgently. After a while she becomes quieter again, her body now lying more still. Only now do I notice that she is still wearing a white chemise. What a pity. I would have liked to see her breasts. Her hands are no longer clawed into the curls of the person between her thighs, but she is now tenderly stroking their head. Then she pulls him up to her - now I see that it is a young man. They kiss and he caresses her vulva. Her legs are still spread. They lie there like that for a while, talking quietly, and I wait anxiously to see what comes next. To my regret, I cannot understand what they are saying.

Then the man sits up, leans down for another kiss and stands up. He walks away from the window across the room until he is out of sight for me. Lisa remains relaxed on the bed and I can see her slender body well. She reaches between her legs and really starts to caress herself slowly now. I'm not quite sure if she's shaved or if her pubic hair is just so light and thin that I can't see it from a distance. She turns her head in the direction the man has disappeared and says something. Is he getting dressed already? I am a little disappointed because the show seems to be over. Then Lisa sits up and takes off her vest. Without thinking, I reach for my cock and rub it a little through the sauna kilt. Lisa looks hot! Her breasts are small and firm, and from up here they look perfect. I would like to touch them. She throws the bodice on the floor and drops back onto the mattress. So is there more to come after all? I just hope they don't turn off the light!

At that moment, the young man comes back into view and I'm quite sure it's going to go on: his cock is sticking up stiffly, an impressive erection! He is holding something in his hand and fiddling with it. As he stands next to the bed, Lisa takes it out of his hand. Yes, of course! - a condom. She tears open the packet with her teeth. The man wants to reach for the condom, but Lisa pulls her hand away. Then she laughs and rolls it over his stiff penis with both hands. No sooner is his cock in the rubber than the man is lying between Lisa's legs. A few clumsy movements, then he seems to have penetrated her, because he starts to move rhythmically up and down. I would like to see him push his cock into Lisa's cunt up close. But even so, the sight is exciting. I prop myself up on the balcony railing with both hands, as if that would allow me to get a bit closer.

Lisa has her arms wrapped around his back and she also holds him tightly with her legs. She has beautiful slender legs that must feel wonderful. Her lover fucks her harder and harder and she starts moaning again. Not a sound has been heard from him so far. I'm quiet myself, but my cock is almost as hard as the lucky guy's in Lisa's bed.

I stare spellbound at his ass, which is now dancing wildly up and down. Then I look at Lisa's face, searching for the lust and passion she must be feeling right now. At that moment our eyes meet. Reflexively I take a step back - but of course that doesn't make me invisible. Lisa doesn't seem to take her eyes off me. After the initial shock, I am not at all sure that she can really see me in the dark. There is only dim light coming from my bathroom - but maybe it is enough? At least to make her suspect that there is someone watching. Someone who is peeping!

In any case, if she sees me, she doesn't let that slow her down. On the contrary. Her moans get even louder, just like before when she was licking, she pushes her pelvis towards the man's thrusts. I can't imagine he can keep up the pace for long. He has put his hands under her ass and is fucking her really hard. And all the time she seems to be fixating me with her gaze. I even imagine I can see a slightly mocking smile on her face.

The couple's rhythm gets wilder and wilder, their thrusts more urgent, harder, their moans more passionate. I would like to jerk off to the sight now, but I don't dare here on the balcony. I don't want to scare Lisa if she really sees me. It will just have to wait until they are done and I go inside. For the first time, the man makes a noise now. It sounds like a groan or a grunt, then he thrusts hard a few more times and then remains motionless on top of Lisa. She encloses him even tighter with her legs, probably preventing him from pulling out. For the first time since our eyes met, she turns her head away and they kiss for a long time. His hands caress her body and I envy him that.

They stay like that for a long time, caressing each other, kissing and talking quietly again. I am still standing motionless on the balcony, still with an erection, fascinated and aroused by what I have just observed. Maybe Lisa hasn't spotted me after all, she doesn't look in my direction once now. At some point the man rolls to the side and pulls the condom off his now flaccid member. Knots it and lets it fall to the floor. Lisa remains lying with her legs wide open, her breasts little more than small mounds in this position, the nipples too small for me to see clearly. But I can look between her thighs, see her red open cunt and try to imagine how it feels.

Just as I am about to retreat quietly into the flat, Lisa stands up. She is now standing right in front of the window to close it and as she does so she looks in my direction again. No doubt about it: she knows that I have been watching her fuck. Naked, she stands on the bed, I can now look at her whole body, enjoy the sight one last time. Then she closes the window. I'm not quite sure, but I think she winked at me. She reaches for a T-shirt, pulls it over, and while she snuggles under the covers, he gets up and turns out the lights.

I stare at the black window panes for a moment longer, then reach for a box of tissues and go to bed, planning on masturbating with thoughts of Lisa.