18 Reasons Why Jess Mariano Was Rory’s Worst Boyfriend on Gilmore Girls

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1. He had a temper problem.

Jess was rarely ever in a good mood. He was always so angry and he was constantly on edge, ready to snap at anyone who rubbed him the wrong way or get into a fist fight if somebody offended him (including Rory's ex, Dean). We totally get that he had a rough past, but that was no excuse for lashing out and projecting his anger onto innocent people. It only ever created even more drama.