Nace -4x03 - "When Did You First Know you Had Feelings For Me"

Ace and Nancy talk about the first moment when they realized that they had feelings for each other.
Nancy - back when Ace helped her when she was possessed by the wraith
Ace- back in HIGH SCHOOL y'all. How sweet is that?
I KNEW it. The lingering gazes he gave Nancy back in Season 1 was actually a tell.