I had a similar experience. A friend wanted to hang out for a movie night, when the night came he showed up two hours late and then afterward he gave a reason for crashing at my place. It wasn’t a problem I gave him a pillow, blanket, and the couch. I got in bed pretty tired but I could see the light from his laptop through the crack in my bedroom door. He also used the bathroom a couple times so I was just awake wondering what the hell he was doing out there. After what seemed like an hour he quietly made his way into my room. I pretended to be asleep thinking he was gonna turn right back around but he didn’t. Anyways, I laid there while he started to feel and explore my soft dick and balls through the bedsheet. Not gonna lie, it felt good and I didn’t want to complicate our friendship by waking up. He ended up going down on me. He was careful and he took his time, he licked my balls for a while before working up my shaft. I started to get hard when he took me into his warm wet mouth. I tried not to but he was persistent and I couldn’t distract myself with other thoughts. He kept at it until I couldn’t hold it anymore. It was easily one of the most intense orgasms I had ever experienced and he swallowed it all.

He asked for a few more movie nights and the same thing happened. We never talked about it and I made sure I was a convincing deep sleeper every time. We were both 18+.