Seeing his reaction to the thought that she might try to seduce him reminds me of a conversation I had with an old classmate. We were talking about a scene in a book where one character was trying to seduce the other.
Me: who even does this type of stuff anymore? It’s just a trope at this point.
Him: Actually no. Somebody actually tried to seduce me not too long ago.
Me: O...Kay? Uhhh...how did it go?
Him: It was wonderful.
I'm sure in later chapters the author will reveal that they are not eyebrows at all, but instead really fuzzy caterpillars that have a symbiotic relationship with his face.
What she likes about him is probably 100% that he's super predictable because he will always choose the clearly "just" option when it is presented to him.