["Not again" is something he'll also tuck away to remember for later, but he knows there's no place for it in the conversation as it is right now. Instead - largely unhelpful but also wholly honest-]

I don't know.

[And he doesn't. Everyone reacts to loss differently.]

You won't know unless it happens, either. But if you're too scared about losing your happiness, you might lose it anyway, y'know? It's really hard and confusing and I don't think even humans know how to do it without being messy, but I guess that's just part of being alive and out there and part of the world.