Preeta's W*F expressions!

Is it just me or is it that Preeta always gives the Classic W*F dude expressions to Rishabh whenever he starts with his Preeta Ji main hamesha aapke saath hoon conversation?

I mean she is always like "Bhai kya baat karr raha hai?

On the other hand when Karan uses the same words, she just goes weak in the knees!

Yeh that's cus she sees rishabh as a friend and is totally not realizing that he loves her. He doesn't give her any feels

Whereas Karan she herself doesn't know she's in love so she's just reacting without realizing...well that's what she's being asked to act like I guess