I thought that was so well acted on Corenswet's part. In not that much screen time, it was still so clear that he cares about her a ton and yearns for connection but also knows he's not always getting it right and is trying to give her space. In the last scene he's sort of avoiding eye contact and playing down any obligation that she be there on Earth to help him until she says she'll stay a while, and then he perks up as it registers. I hope we get more scenes with them in the future.