Cute story and girl.
But I start to wonder if they added step-sister. Most of the work are blood related sister. This time not. Not that is a problem tho. It's the more legal way.
If they broke up, why does she still stay "we can't"?
It's hard to argue if they divorced or not. But so far she is still married to the guy. And so far she still kinda intend to have him as her man.
Until the parents of her find out that a teacher sleeps with their kid.
But that is the story end and we can guess its all happy. Only the girl from chapter 1 choosed the wrong guy. Kinda.