I've read a lot where they jump right into sex, or they take a while to get there but the fic is like here's point a and now here's point b which is a big deal because they've never done it before. What I want, though, is the journey in between. Lots of kissing, lots of being really turned on but not quite ready to do anything about it, etc.
It would be really cool if there were any S3 canon divergences where Kurt has already had sex with Blaine before they broke up and he started dating Dave. I'd prefer them to have been written before On My Way. Thanks in advance!
EDIT: The rec in the comments was very good, but the sex still came a little too fast for me. I realized I may not have been quite specific enough. I'm not particularly fussed over how quickly (or not) they get together. I'll even take established relationship. What I want is a slow progression of physical intimacy.