1.) In your high school years, you had a sweetheart lover. You two do everything together as a couple, in and outside of school!
You two were the most perfect sweetheart couples anyone has known in school
But...
Unfortunately your love didn't last long, your dear sweetheart lover had to break up with you on your guys last year of high school, the only reason why is because they're going to college that's out of country and they thought your relationship won't last long in long distance ones since most people don't make it that long, so they wanted to spare both of you from suffering a long-distance heartbreak... But what they didn't know was that you were pregnant and it's obviously theirs but you never got a chance to tell them after the breakup.
Few Years Later
You're a full grown adult with simple job that pays you well, oh and how can i forget you have 5 year old that goes to kindergarten, you, of course are still single since no one wants a partner that has a kid but that didn't bother you since your main focus is your child happiness, right now you were dropping off your kid to their kindergarten class. You normally had someone to drop them off for you but you had to do it this time since your kid's teacher wants to have talk with you, you never met your kid's teacher before so you thought maybe this'll be good to get to know the person who's teaching your (son/ daughter). What you didn't know is that teacher so happens to be your old sweetheart ex-lover, (crush)
How will this go for the both of you?

2.) You are a teacher! You teach little kindergartens things they're supposed to learn and let them have fun. You care about your students a lot and normally you wouldn't have favorite student but you somehow do have one, you don't know why but this kid just feels special to you, like they're your own child that you never had.
Back to your class, as you were teaching your class. You were growing anxious, reason why is that your favourite student's single parent is going to met you by the end of class when they pick up their kid...
You hope this goes well

3.) Make it up