Answer: Hyperbole
Step-by-step explanation:
"This hurt me more than it hurt you" is an hyperbole as it is an exaggeration used in order to emphasize a situation. Hyperbole is a literature device that uses exaggeration to create a powerful effect. Moreover, this device can also be used in our day-to-day life and speech in order to give emphasis in an excesive manner; in the case of the above phrase, it tries to state that what happened hurt that a person a lot, even more to the other person involved. Another example of hyperbole could be "It's been ages since I last saw you"