Classic: We don't usually see them together, so I don't know. But I do see him bruised sometimes when he comes back from his AU, and it's making me worried...
Blue: Same here with Classic
Dust: He doesn't usually come to the base unless he can't stay in his AU, we don't really care much about it to do anything really
The rest of the Bad Guys: *agrees*
Nightmare: There's hate between them, I can tell
Dream: With what brother said, it's the same for me. Though I do feel a small bit of positive emotion, but I'm not really sure
Error: Don't care, don't want to care, doesn't bother me. Now fuck off
Reaper: I'm not really close to him in any sort of ways, so I don't know
Geno: Same here
Ink: Truth, there's a love-hate relationship between them. They do care about each other but out of instinct, there's still hate within them. I think it's because how they were coded to act hostile most of the time