[Luke and Vader will get there, slowly. Luke and Kylo... that's a lot more up in the air. Mostly because they seemed to have settled into this unspoken rule of just avoiding each other.]

You've been through a lot, I get it.

[Does that stop him from reaching out and playfully poking her forehead? No, no it doesn't.]

Just try to remember for next time, okay? I've got your back and that's not going to change.

[Well, maybe with old him that would change. But that's not Young Luke's problem, old him is a cranky old asshole and probably smells. Gross. Forget he exists please.
Her smile, small as it is, gets met with one from him. That's much better, not because of the smile, but because she genuinely feels a little better than she did before.]

I don't know, it's hard to say what we'd learn in all that time. It's hard for me to even imagine it.

[But that's a worry, once again, for the future. This is the present and he's intending to remain grounded in the moment.]

You think you can manage eating now?

[As he enjoys his tea. Like an old man. The affects the old people have on the young'uns isn't to be underestimated.]