I'm Telling You (よ)

ね invites agreement on something shared; よ hands over new information the other person doesn’t have yet. Mixing them up is a subtle but real mistake: saying 安いですね about a price only you know suggests you expect the listener to already agree, when they have no way to.

よ can read as helpful or pushy purely based on tone and how often it’s used, stacking it onto every sentence starts to sound like nagging. Softer speech, especially from women in many contexts, favors わよ or just よ said gently; a flat, clipped よ can land as blunt or irritated regardless of the words themselves.