Oneshot, headcannon for Michael. Some spoilers, some of which turned out to be true, others false.
Summary: Sebastian has made a stupid mistake. And while apologising might not be his area of expertise, he might have to make an exception for Blaine Anderson just this once.
Also on ff.net
Summary: Sebastian is a clever man with a clever little plan; ideal for stealing guys from their annoying boyfriends. This story can be considered either Seblaine heavy on Klaine, or Klaine heavy on Seblaine
Spoilers up to Hold on to Sixteen. Au-ish after Michael.
Rated T, for a bit of language and mentions of sex.
also on ff.net