A woman named Olivia matched with a guy on Tinder and decided that she had nothing to lose, so she might as well go for it—"it" being the guy's friend. The guy had a group photo on his profile that included a long-haired gent Olivia found attractive. Olivia's Tinder match was either very amused with her forwardness or slightly irked, thus prompting him to take advantage of his friend's hair length for some Game of Thrones fun. (Fun and GoT go together so rarely.)
Olivia should still be feeling for Jo(h)n. Things may be looking up for him given that he's no longer dead, but life's not great yet. As for this Tinder guy, Olivia needs to reassess her attraction to John and hang out with this hilarious fellow.
Then again, she clearly hasn't caught up with the show yet, and this guy evidently has no qualms about sharing spoilers.