The fic I'm looking for I'm fairly certain was answered as a prompt in either the angst or kink memes. Part of the prompt was a picture with a list full of things like, "Let's just go to sleep," means no, "I'm not sure," means no, "I've/You've been drinking," means no, Silence means no etc. I'm pretty sure it was 5+1, but the number might be different.
It had snippets with the times that Blaine said one of these and was ignored. Some of the scenarios were the I'm tired one and a silence one. The final instalment was when he and Kurt are together and Blaine had been drinking. He expects Kurt to want sex and is surprised/delighted when Kurt says that he wouldn't when Blaine was drunk.
Thanks in advance :)