When I say one of those exceptions, I mean this case is an exception where Oda took something and didn't do what he usually did. (I don't know any romance exceptions he's made)When has he not used it as satire?
It's always been a joke, and almost ridiculed or laughed off by him, e.g. Sanji and any girl ever or Luffy and Hancock...
Will she really change? Only time will tell to be honest. I'd roflmao if she suddenly ditched Sai for Law
Anyways, he made this significant. Did it appear that this scene was meant to be comical? Did Sai's eyes turn into hearts like Sanji's? And Baby 5 isn't acting with Sai like how Hancock acts around Luffy, that's for sure.