10 Most Heartbreaking Futurama Moments

10. U Leave Me Breathless

In Love & Rocket, the Planet Express crew are tasked with delivering vats of candy hearts to Lrrr and Ndnd on Omicron Persei 8. However, the Omicronian leaders reject the gift, partially because of how unpleasant the chalky taste is, but mainly because the human concept of 'wuv' confuses and infuriates them. More so even than when Ross, the largest of the Friends, did not simply eat and digest the other five.

They're so infuriated that they chase Planet Express across the galaxy. This is further complicated by Bender, who decides to break up with the ship's AI because he likes a dump to be 'as memorable as it devastating'. Though they do eventually escape, the ship's AI goes rogue and decides she needs alone time with Bender.

This leads to her shutting off the ship's oxygen. Leela can get it back on, but her emergency tank is running low. Without telling her, Fry gives her his oxygen and passes out while looking for the perfect message on the candy hearts. As Leela revives him, he spits out one with the message 'U Leave Me Breathless'.

It couldn’t have been better, unless it had also been Valentine’s Day. What? It was? Hooray!