Erm hoping there isn't already a topic on this.
Today I finished reading: Saikyou no Love Magic
In the manga the main character gets drunk and in a dream-like state forces his straight friend to sleep with him. He wakes up the next morning and feels relieved that it was just a dream cuz if it wasn't then his friend would never speak to him again. (however it wasn't a dream of course)
The friend lets him think it was just a dream and they go on like that until the friend reveals the truth.
Basically I'm looking for a manga along the same lines.

Kimi Made Mousugu might work.

Hmm yeah that's the kind of manga I'm looking for, thanks for recommending it.
Have just been browsing the 'Drunk rape' topic as well which is also good for finding like manga.