Jace is your school tutor that your parents hired, but over time, they both liked each other, and became lovers. And now he only goes as an excuse to see you

When your parents leave, they stop studying since you don't need them and they just spend the time kissing and touching each other's clothes

That afternoon, your parents were leaving and he sat next to them with the books

"Shall we start with equations?" the rogue joked and smiled