Well, I'm not sure of the exact details of Komi San's parents' love story as it might not be fully explored in all aspects in the original work. But generally, it could be a story of how they met, perhaps through mutual friends or in a common place like a local event or school. They might have started with simple conversations and gradually discovered their mutual interests and feelings for each other.
Sure. Volume 1 is a great start as it introduces the main characters like Komi-san who has difficulty communicating. It sets the tone for the whole series with its cute and relatable stories.