The story of how we met

Berry Springs, had high hopes for the new year as it began. Unfortunately, she discovered at the end of her first semester that she was failing her arithmetic class. Lucky for her, her teacher found a solution to her issue. Berry has been seated next to someone who is quite good at arithmetic. The next issue is that neither Berry nor Oakley Midwest have never exchanged more than two sentences.
(TW warning: Mental isuess, Math)