I’m having a lot of fun watching Love Story: JFK Jr. and Carolyn Bessette, but as someone who is not obsessed, fascinated by, or even particularly interested in the Kennedy family or John Jr. and Carolyn, I’m not watching with a keen eye for lore and doing the Leo-in-Once Upon a Time-point meme the way the rest of you are every time the show faithfully recreates a paparazzi photo or references something iconic. Of course I’ve seen the infamous photos of John and Carolyn barking on each other in the street, because I have a pulse and an Instagram account, but it wasn’t until I noted the title of this week’s episode, “Battery Park,” that I realized that this particular recorded argument was A Thing. As dramatized by writer Kim Rosenstock and director Crystle Roberson Dorsey, it’s a great sequence in its own right, occasionally moving, even (the way Sarah Pidgeon casually says she doesn’t believe in marriage but is down to do it with John only to tearfully exclaim “Oh my God” as she …