When did you first have feelings for mama?

Sarada: When did you first start having feelings for mama?
Sakura: *peaks in the room upon hearing the question.*
Sasuke:* Smirks when he notices her.* I’ll tell you, but it has to be a secret from your mother?
Sarada: Sure
Sasuke: * sits next to Sarada and whispers after the chunin exams*
Sarada: Really?!
Sasuke: Hn * looks towards Sakura and smirks.*
Sakura: * continues walking as if she was just passing by*
Three hours later.
Sakura: Sara-chan? can you tell me what was papa’a answer to the question you asked earlier?
Sarada: Sorry, it’s a secret.
Sakura:Ugh.