That's been made abundantly clear over the course of a bitter rivalry that started behind the scenes and spilled over onto Twitter and the UFC airwaves over the past 12 months.
The pair tried to settle their differences at UFC 132 last summer, where Cruz scored a unanimous decision win over Faber in their main event title fight. But the fight answered no questions for Faber, who believed he won the bout and wanted another chance to prove that his first victory over Cruz, way back in the good old days of the WEC, wasn't a fluke.
Cruz and Faber will now be afforded a luxurious platform to settle their differences when they begin coaching their respective teams on The Ultimate Fighter Live, which debuts this Friday night on new broadcast partner FX.
It's a season of television that will no doubt heighten the rivalry to epic proportions, but it will also serve to make Cruz and Faber the first true stars of the featherweight and bantamweight divisions, which were brought over after the closure of World Extreme Cagefighting.
Make no mistake about it: Faber and Cruz do not like each other. This isn't a rivalry created to hype an eventual fight. These two fighters have a genuine personality conflict.
Check out this video from tonight's episode of Fuel TV's Ultimate Insider to hear Cruz and Faber preview the upcoming season of the UFC's venerable reality show.