By Rick Porter Television Business Editor The Love Story currently playing out across FX’s streaming partners has captivated a sizable audience. The limited series has racked up more than 25 million hours (or 1.5 billion minutes) of viewing for its first five episodes on Hulu and Disney+, FX says — a record streaming number for an FX limited series. The show airs on the FX cable channel as well, but virtually all of its audience has come on the two streaming platforms. The show has also been building week to week. While FX isn’t sharing precise viewing data (and Nielsen’s streaming ratings haven’t yet caught up to the show’s Feb. 12 premiere), the outlet says Love Story: John F. Kennedy Jr. and Carolyn Bessette’s most recent episode drew 51 percent more viewing time than the series premiere. The season is set to conclude on March 26. As the title says, Love Story tracks the relationship, marriage and tragic deaths of JFK Jr. and Carolyn Bessette Kennedy during the 1990s.…