So I [M25] just got to this hostel and got to know the guy(20s) and girl(20s) staying next to me in the bed over. There's four of us, but the other is a dude that's basically stoned 24/7 lol.

They had arrived a few days earlier and had clearly already gotten pretty into one another by the time I got there.

The next day in the evening I was chilling on my phone after being out and about in the city when they came in clearly wasted. I said hi and the girl came over and immediately asked if she and the guy could do it in the room. I told them of course and got up to leave, and she told me no that I didn't have to go anywhere.

I sat back and she and the guy immediately started going to town. Immediately I couldn't help it and got hard. She told me I was "more than welcome to watch by the way."

I don't even know if they saw me once, but I shortly after pulled it out and just started taking care of myself. I tried to give them their privacy as much as possible but snuck in a few glances as I needed em.

After a good while I couldn't help it and came.

I scuttled off to the bathroom and when I was back they were quietly cuddling.

I went to bed and when I woke up they were both gone.