The context of the following conversation is Kai improved Jan's work, but then Jan stopped talking to Kai anyway.:
Kai says I guess all that hard work was for nothing..
The friend responds What do you mean, Kai?.
Kai responds I spent so much time helping out Jan with her work and she ended up ghosting on me..
The friend responds She just stopped talking to you?.
Kai responds Yes, I guess she got what she wanted from me and moved on..
The friend responds Well that's terrible to hear. I'm sorry, Kai..