I'm looking for a specific fic. In this fic Kurt has regressed back to a young child mindset after the pressure of everything after high school became too much for him. Sebastian and Blaine are his daddies. I know that no sexual activity has happened between Kurt and the other tWo in the fic. One part I remember clearly is when Sebastian, who is the one to realize Kurt can't go on the way he is, shows Blaine his solution on line and Blaine's response is something like 'Your solution to his is to have Kurt call you daddy when you have sex?.'
FOUND! Link in comments.