It happened on my parents summer house. My room has a big glass door on the balcony and the apartment on the opposite site is less than 5m away with full view to the bed if my curtains are not closed.
Every day after I got back from the beach for my morning Swim (or before sleeping at night), I took a bath, go into my room, close the curtains and the door, put some porn on the laptop, lube my dick and hands and jacked off.
One afternoon, due to me being extremely horny, I just lubed up my hands and starting playing with myself without closing the curtains and the balcony door was wide open. 5 mins in my session, I noticed the wife of the couple that lived on the opposite apartment watching me. I got embarrassed and went to close the curtain but I saw the wife doing a “please no” hand gesture for me not to close it. I already was near orgasm and I filled with cum my hand standing on the balcony door. She smiled, I felt even more embarrassed but extremely aroused and went inside. The next day around the same time as I came out of the bath with a towel around me, I saw her standing in the window signaling hello and winking. I did the same thing ignoring her presence: Lubed up, porn on, wanked till I cum, proceed to close the curtains while she smiled. This continued for 3 days twice per day leading to me filling more and more comfortable with her watching me to the point that i forgot her presence. It made me horny to a point i cannot describe so I started doing staff while masturbating that I had done on the past but no so often to keep her interest up: I like lifting my hips up when cumming and shoot for my head and lick cum of around my mouth, I also like placing my body in a position that allows me to finger my ass with one or two fingers or put the handle of the hairbrush deep in, lots of lube though. On one point her husband started watching as well. To please both I turned my ass towards the window and offered full view to both of them. This became a habit for around 20 days that I stayed there, most of the times twice per day, on noon after the morning swim and before bed time. It made me so aroused to know that they got enjoyment out of this and half the times participated by requesting me how to jerk off, what position to put my body etc.
The couple where French tourists around their mid 50s. The wife was good looking and the husband was somewhat fit.
Source: reddit.com/r/gonewildstories/comments/p9wgdw/when_i_was_25m_i_masturbated_while_the_couple