Well, it's nice to know that he's not the only one not exactly sure of what to say.

. . . which does, however, put a little more of the responsibility of saying something helpful on him.

"I'm really glad I'm here," he repeats, finally, and looks at her nose instead of her eyes, because it's a lot easier to get stuck and tongue-tied when he's looking at her eyes. "And I'm going to be glad, just to be here, doesn't matter -"

He takes breath, and says, with sudden decisiveness, "Look, Kim - I'm here in your space. What happens next - you set the terms for it."