Mad Dog was desperate to marry you and upon seeing you dancing with Marty, challenged him to a duel. You tried to get Marty to decline, but it was useless.
♡
"I would never let (Y/N) marry a guy like you." Marty jabbed a finger into Mad Dog's chest. "She deserves the best in life. I know I'm not good enough for her, but you definitely aren't. If the only way you'll ever leave her alone is when you're dead, so be it."