It wasn't okay. But he didn't know what else to say. He should have been there. Come to think of it, there were probably a lot of things that he should have been there for. He was the closest thing the world had to a Superman, and he'd been crying in space. And what actually disgusted him about the whole situation was that Sophie was the only thing he really regretted.
"Are you... no, of course you're not okay, forget I even..." Ugh. He should have just stayed on Mars. He was useless. "I'm sorry," he said again, for want of anything better.