He's more of an acquaintance.

[She corrects Rose simply, but her attention shifts a way as she does. Shirou had better not be dead. Even if it'd make her life just a little easier, after everything she gave up to keep him alive, it would be too much of a waste.]

I'm sure he'll be fine, there was someone else there to look after him. And like it or not, it seems we have bigger problems to be worried about now.