Quoted By:
>Ash: "Wow, imagine Brock married." Ash saying it mild surprise.
>Misty: "You and I will get married someday too." Misty saying it in a, casual, calm, matter of fact way.
>Ash at first simply nods with what she is saying.
>Then becomes very surprised when he realizes what she said.
From episode: Heartbreak of Brock
Way later on, in Sun & Moon, she asks Ash for his z-ring, and he acts the same way again as though she just asked to get married.
And now we come to the current episode, ep2, in which Misty talks about the red thread of fate. The myth also goes by another name "the red thread of marriage". Ash is surprised, but far less than the prior two times.
So if anything, Misty has already spilled her heart out to Ash.