I don’t know how my fantasy originated, but it has multiplied into a bunch of different scenarios, all with the common theme of me pretending to be asleep.
The first version of this fantasy that i can remember involved me sharing a 2 bed hotel room with a woman who isn't my gf. In my fantasy, I'm practically asleep when I think that I notice the lady touching herself in the opposite bed. I perk up but I don't move. Sure enough, I hear a vibrator turn on but again, I pretend to be asleep. She even turns on the tv and watches some porn on mute. This keeps ramping up until she's sneaking into my bed, trying to pull my dick out for a bj while doing her best not to wake me up. Meanwhile, I'm actually super alert but trying my best to appear asleep because it looks to me like thats what she wants. But in the end, as her vibrator is getting her closer and closer to cumming, she can’t help herself. She loses control, blows me like she wants me to cum, I “wake up”, and we cum at the same time.
I swear, this fantasy has multiplied into so many different scenarios that I can't even keep track. Dorm room, beach, mff, language barriers, my wife, roles reversed, massage… the common theme is that she seems a bit embarrassed and doesn’t want me to wake up, and I don’t want her to know that I’m actually awake and have been watching her, enjoying every second.
There probably is an element of consensual non-consent in there if done in real life, but I’ve never given it much thought because it kinda feels like a silly porn scene on the surface.