Somethings happen to you.
Things you don't get to choose.
Things to you have to deal with.



He's talking about Bucky, and even though Sara's expression remains a sympathetic neutral, she knows she doesn't fit his example and she knows it would do him no kindness to remind him of that. It doesn't change that she's probably the best person on this ship, in all Bucky's option, for someone with options for him to explore. A team that can stop him, or at least slow him down seriously, if he makes the wrong ones.

"If you promise him that, make sure you can back it up."

This is careful. Maybe even too careful, too close.
A kind of tether that shouldn't be left dangling in the black unless meant.
Unless you know what that promise can mean, can bring back from the black, too.