Okay! I'm good with anything you want to do. At this point in the story, he probably wouldn't admit that he's curious about anything she does. She would probably just catch him staring at her xD
I also like your idea of giving Eve another talent. Maybe in addition to what you had planned for her, she could also be good at singing or something musical? That would definitely pique Caeyin's interest, since Lunairans who knew music were few and far between (they would only use music for mating ceremonies)