The ABCs of Love (2020)

Vincent, a 30-year-old who cares for both pets and children, takes a job babysitting Bart, a 9-year-old who recently moved into the building with his busy mother. At school, Bart wants to be popular, so he pretends Vincent is his dad when others assume they're related. Bart loves Vincent’s playful personality, and the kids adore him. Vincent, initially hesitant, starts to fall for Bart's teacher. To spend more time with her, he embraces the strange customs of the Parent-Teacher Association. But Vincent soon realizes he has a difficult problem: how to undo the big lie he's created.