I've got another lost fic that I'd love to locate. I don't remember a lot of details but Blaine was a counselor/live-in therapist in a house for LGBTQ kids, and Kurt was one of the semitroubled kids. There was an age-difference, but less than 10 years I think. Blaine helped with homework, there was a bonding scene in the kitchens and plenty of angst. I'm pretty sure that Hope and House were in the title.