Task: Question Answering
Input (English): He could hear the whispers as he passed each group to get to his locker and outwardly he ignored them all . Inside , he was a mix of hurt and anger . She'd done it again . Lilly had cheated on him again and he was pissed , just as he always was when he found out about her little flings .
Output (English): What's a possible reason Lilly cheated on him ?