summary: barty tells him about the dark lord, tells him that they are both old enough to understand their places in this new world.
( you wanted to go back to where you feel safe, hear your brother's laughter, see your mother's face, but your childhood home is just powder white bone. you'll never find your way back. )
So! My idea with this was that Barty and Regulus obviously both have CRAZY MOTHER ISSUES, and Barty would kind of see Regulus as smaller/weak/defenseless, and he kind of takes up the maternal role, like he keeps people away from him (because he’s a delicate flower) and feeds him and shit. And at first Regulus is all: OH MY GOD, WHAT IS HE DOING? WHAT IS HE DOING? but then he figures out that he kind of likes the cuddling, and other people aren’t all that great, anyway.
Someday I might like to write more on this! Idek, though, since I seriously had to stop myself from signing up to write for the HSM Big Bang (bad idea, bad bad bad idea)>.>