>>213556096I think we need to differentiate between real life and fiction. In real life, it's not a complement if a woman tells you something like this. It does mean she's not sexually attracted to you but wants to keep you around as a fallback option after she's done having her fun.
But King of the Hill isn't real and Connie is intended to be seen as a good-hearted character. In that context, the note is meant to be interpreted the way you describe.