The Falcon and the Winter Soldier fuelled a lot of theories with one seemingly innocent line in its series premiere. While on a date, Sebastian Stan's Bucky Barnes discussed how he doesn't understand Tinder, mentioning his confusion over the trend for users to post tiger photos. Seeing as this trend is predominantly male-led, fans inferred that Bucky must be swiping right on men's profiles, which seemed to be a subtle indicator that he's bisexual.