I can't quite figure out what year we are living in. Let me more clear. I can't pin down what year the chronically online are living in. We are in an unprecedented time of tech advancement, what with artificial intelligence taking over our lives and astronauts literally going back to the moon . But everywhere I turn, I see remnants of the past: People are yearning for 2010s hipster aesthetics. Avatar: The Last Airbender fan cams are all over my FYP. Celebrities are skeletally thin again, and thinspo pages and eating disorder content are taking over TikTok. But most confusing: Lena Dunham and Jack Antonoff are once again the talk of the town. SEE ALSO: Justin Bieber's Coachella set was deeply online in the best way Dunham (actor, writer, and director) and Antonoff (Bleachers frontman and pop-girl collaborator) dated from 2012 to 2016. Their relationship was quintessentially of the era. It was a bit messy. Then came " The PowerPoint.…