It was something like this:
There is a new girl in McKinley, Kurt and this dazzled with her because she's like the only girl with fashion sense he ever seen, I think it has something to do with the scarf she is using.
This girl is Blaine, she and Kurt are friends soon, and the two are attracted to each other, but think Kurt and Blaine is gay too.
Puck and other school live flirting with Blaine because she's super hot and has some big tits.
Finally, at a party at Rachel's house they solve their problem of sexual tension, and Kurt takes the virginity of Blaine in Rachel's bed.
Please, I need to find it!