Imagine your OTP meet in a high school/college lecture when person A drops their pencil and person B accidentally steps on it and breaks it. A off-handedly mentions that it was their favorite pencil and person B proceeds to feel horribly guilty. The next day person A comes out of the dorm to find a tower of pencils exactly like the one that B broke. Person A then feels awful that they spent so much money on them so the two of them go back and forth between giving pencils and then giving them back for a long time. Until person B finally just asks them out and they just share the pencils.
