"Sasa sweetheart" The moment you see the message you can immediately guess what will follow. Maybe it is the way she starts by calling you sweetheart when you rarely get a 'dear' or maybe it is the fact that she opted to use phone messages instead of WhatsApp. You could argue that she is really missing you and could not wait for you to get online, but then you remember you are the one always initiating the conversations on WhatsApp and even then they mostly end up in blue ticks.
Since she has never called you sweetheart, you have trouble coming up with a response. You could call her sweetheart too but then you would be falling into her trap. So after a few typed and deleted texts, you finally settle on one that you feel does not sound very encouraging.