All the ND and Sebastian were living in New York. Blaine has invited everyone to come meet his family in the Philippines (? I think ?) but in order to make his grandpa accept/be proud of him he told him that he and Kurt were still dating. Blaine comes to Kurt’s apartment at like 3AM and asks him to pretend to be his boyfriend while they are on vacation. Sebastian refuses to go because he doesn't want to watch them act "together" but Santana convinces him. Nobody knows that he and Kurt are getting close and they are all hoping that this will actually bring Klaine back together. When they get there, there is something about Kurt and Sebastian talking on the veranda in the morning and watching a couple of monkeys go at it (i know totally random).
I think there's been like 3 chapters and Blaine narrates much of the story (something like how he helped get them together)
Anyways…if anyone has any idea where to find this I would love you forever :)